David Krumholtz knows how to play a professor. After perfecting the role for six seasons on Numb3rs, he'll go back to the classroom for his upcoming guest spot on Law & Order: SVU. But Krumholtz says the two parts are very different.
"It's certainly one of the more intense roles I've played in quite some time," he says about the character, who he calls a rabble-rousing firebrand. "A guy who's sort of on edge with a cause, fueled by love - I haven't really done much of that in my career."
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