During a Christmas open-mic night in New York, a new face took the stage under the name Alex Novak. He was moderately funny, clearly dealing with personal issues, and his set centered on the emotional fallout of a divorce. What stood out the most, though, was how much he resembled Will Arnett, known for roles in Arrested Development and other popular works. “I had no idea what I was getting into,” recalls Arnett, nearly a year later. “I’ve worked around comedians for years, but never actually