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Jordan Peele and Keegan-Michael Key
Tenure: 2003-2008 (Peele); 2004-2009 (Key)
The former "MADtv" castmates have scored big-time with their critically acclaimed Comedy Central series "Key & Peele," which has run for four seasons on the network and continues to build in buzz and influence. While both comedians worked steadily following their run on the now-defunct FOX series, "K&P" is the project that transformed them into bona fide stars, thanks to consistently whip-smart sketches that also connect brilliantly as broadly comedic gut-punches. They may not technically be "A-list" yet, but give them time: both have a number of big-screen projects in the pipeline that look likely to catapult them even higher.