Colbert has been one of the sharpest satirists from his perch as host of CBS' "The Late Show." He offers live telecasts nightly after the Republican and Democratic conventions at 11:35. The lineup during the GOP convention includes Zoe Saldana and Jennifer Saunders on Monday; Keegan-Michael Key on Tuesday; Tony Goldwyn (who plays the president on "Scandal"), Mark Cuban and Lewis Black on Wednesday; and Sen. Elizabeth Warren, D-Mass., and Billy Eichner on Thursday.