Which 'Saturday Night Live' cast member famously played "Church Lady"?

Which HBO show is hosted by Bill Maher? Which comedian hosted 'Chappelle's Show' on Comedy Central? 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' sketch introduced Wayne and Garth? Which 'SNL' cast members played the Blues Brothers? Which comedian starred as a fictionalized version of himself in 'Louie'? What channel is known for running 'Shark Week' each summer?