Thanks to the Numb3rs.org site and allie181, who posted the full article from The Record. Text below.

It's all adding up for familiar faceDavid Krumholtz was sailing along as a character actor - Numb3rs made him more
You've seen David Krumholtz before. He was the head elf in The Santa Clause (1994) and The Santa Clause 2 (2002), the schizophrenic patient who stabbed Lucy (Kellie Martin) and Dr. Carter (Noah Wyle) on ER (2000) and Tobey Maguire's drug-addled roommate in The Ice Storm (1997).

Does the name or, better yet, the face ring a bell?

If not, there's more: Krumholtz was also the best friend of Wednesday Addams (Christina Ricci) in Addams Family Values (1993), Goldstein in Harold & Kumar Go to White Castle (2004) and Milt Shaw in Ray (2004).

"There's a book out now called 'Hey, It's That Guy!' -- actually I have it -- and it's (subtitled) The Fametracker.com Guide to Character Actors," Krumholtz says. "I'm in it. They call me 'the nice Jewish boy.' "

The next edition may not include Krumholtz, however, because the CBS series Numb3rs, a surprise hit, has put the 27-year-old actor on the brink of stardom. Krumholtz co-stars on the CBS series as Charlie Eppes, a brilliant mathematician recruited by his older brother, Don (Rob Morrow), an FBI agent, to help solve crimes using mathematical equations. The show is in the home stretch of its second season, and has already been picked up for a third year.

Speaking by telephone from his Los Angeles home on a rare day off, Krumholtz says that it's too easy to describe Numb3rs as yet another police procedural. In fact, he insists, it is entirely different from the various CSIs, Law & Orders and others of that ilk.

"I always thought the concept of Numb3rs was brilliant," Krumholtz says. "Our show is a lot more down-to-earth than shows like CSI, the three CSIs. We're still a science-based show. Math is a very step-by-step process -- mathematicians not only like to solve the problem, but they revel in getting to solve the problem. They revel in every step, and that's the approach we take.

"Everything we do on the show is piecemeal," he says. "No stone is left unturned. We don't necessarily cut to a fancy-schmancy graphic before explaining exactly what we're doing. The show isn't about that. It's about dialogue, it's about acting and it's very much about what you're taking away and what you're learning as you're doing it.

"So it is a procedural in that regard," the actor concedes, "but it's certainly a different kind of procedural. If we were flashier, I don't think anybody would buy it."

Krumholtz hastens to add that, unlike other procedural dramas, Numb3rs delves deeply into the private lives of its central characters. The Charlie-Don relationship is in play each week, as well as the brothers' relationship with their widower father, Alan (Judd Hirsch).

"The show really is about the brothers and their father in this very strange situation," Krumholtz says. "The two brothers are very different, and yet very similar. They both have the ability to problem-solve, but from different ends of the spectrum. They've had quite a tumultuous past.

"There's a lot of resentment between them over their mother, who died of cancer after being with Charlie, and away from his brother and father, while he was doing his undergrad and graduate studies," he says. "There's a lot of distrust between the brothers and at the same time a lot of trust. And they both want to please their father, who's in the middle of this competition and trying to patch it up.

"I think that's a wonderful story line behind all the procedural stuff," he says. "You can call it the B-story, but what's great is that it always influences the A-story, which is the crime-solving."

Krumholtz adds that the March 31 episode of Numb3rs, which Morrow directed, will be particularly important for Charlie.

"There was some question as to whether or not Charlie was a virgin," Krumholtz says. "He was so shy around the Amita (Navi Rawat) character, and so timid about asking her out on a date, during the first season. But he is a 30-year-old, and we just weren't aware of his past with women.

"He is a mathematician and, not to slam mathematicians or the general geekdom of the country, a lot of them have social-anxiety problems and a lot of them are late bloomers," he says. "And we wanted to make sure that, no, this guy in fact has a great deal of experience. So his old flame (Sonya Walger) comes back into town for a book signing and she and Charlie, for lack of a better term, hook up.

"What we hope to do, by the end of this season, is bring to light why Charlie agreed to work with his brother and why his brother asked Charlie to do this for him," Krumholtz continues. "There's a deeper reason than just, every week, 'Hey, can you help me? I'm screwed. I can't figure out how to solve this case.' There's a much deeper reason for these two characters to help each other out."

Some actors spend their careers trying to land a long-running series and, if they succeed, ride the wave for as long as it lasts. Others land a popular show and, hoping to leverage their newfound fame and power, want out as quickly as possible so that they can run off and make movies.

Krumholtz considers himself to fall into the former category.

"I can understand both perspectives," he says. "This is a lot of work. A lot of actors, in their blood and psyche, are not made to do a job for 9 1/2 months a year. Actors like to move from one job to the next.

"But the reality is that it's tough to have six months off and not know if you're going to get another job or what that job will be or if it'll be a good one," he continues. "I always wanted to do a series, full-on knowing what it'd take. I think it's fascinating to follow these characters and watch them evolve.

"Yes, there are times it's monotonous," Krumholtz admits. "It can be incredibly difficult to stay excited and to just wake up every day, get in that traffic and go. Actors are actors for a reason. They're inherently lazy most of the time.

"So it takes a lot of getting used to," he concludes, "but the idea of doing this show for a lot of years, because I love it so much, isn't that daunting. It's sort of a dream come true for me."

Besides, it's not as if Krumholtz had to give up making films. He'll spend this year's summer hiatus filming Knocked Up, a comedy from Judd Apatow, director of The 40-Year-Old Virgin (2005). And he has several other films awaiting release, including a dark romantic comedy called My Suicidal Sweetheart -- opposite Natasha Lyonne, with whom he appeared in Slums of Beverly Hills (1998) -- and Tenacious D in: The Pick of Destiny, a Jack Black/Kyle Gass rock-and-roll comedy in which Krumholtz makes a cameo appearance. He also has a small role in Emilio Estevez's Bobby, an all-star drama about the events surrounding the assassination of Robert F. Kennedy.

In other words, even if he's still That Guy! to some people, Krumholtz can't find much to complain about.

"It's an amazing situation," he says. "When I look back, I've been doing this for 14 years and I've made 26 films. I didn't ever expect any of this to happen.

"I didn't become an actor for any particular reason," Krumholtz admits. "I got picked off the street, basically. So for things to have panned out this well, and for me to have had this many opportunities to have worked with so many amazing people, and now for it to come to this place, where I get to do a series that people love, is great.

"I'm not leading the life most people get to live," he says, "and I know that. I'm not taking that for granted. I'm always expecting the other shoe to drop. I'm always expecting a piano to fall on me.

"I don't know when the luck runs out," Krumholtz concludes, "so I'm just really happy to have been celestially selected to have a good life."