Which comedian starred as a fictionalized version of himself in 'Louie'?

Which sketch comedy show from the early 1990s featured Jim Carrey and the Wayans family? Which 'Saturday Night Live' cast member famously played "Church Lady"? Which 'Saturday Night Live' sketch introduced Wayne and Garth? Which 'SNL' cast members played the Blues Brothers? What channel is known for running 'Shark Week' each summer? Which network airs the long-running series 'Pawn Stars'? Which long-running PBS series appraises antiques brought in by the public? Which Discovery series follows crab fishermen in the Bering Sea?