Which 'SNL' cast members played the Blues Brothers?

Which comedy duo created the sketch show 'Key & Peele'? 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 comedian starred as a fictionalized version of himself in 'Louie'? 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?