The Late Show with Stephen Colbert Season 2 Mayim Bialik, Andy Karl, Ramy Youssef Season 2, episode 147 Mayim Bialik, Andy Karl, Ramy Youssef May 11, 2017 45 min Actress Mayim Bialik; actor Andy Karl; comic Ramy Youssef. Previous episode Nick Offerman, Megan Mullally, Aaron Taylor Johnson, Dave Matthews, Tim Reynolds Next episode Tracy Morgan, Timothy Simons, Dan Auerbach