Season
Episode
- Episode 1: Alfonso Ribeiro
- Episode 2: Keegan-Michael Key 4
- Episode 3: Karla Souza
- Episode 4: Yvette Nicole Brown
- Episode 5: Kaitlin Doubleday
- Episode 6: Lolo Jones
- Episode 7: Jonathan Mangum
- Episode 8: Joey Fatone
- Episode 9: Tamera Mowry-Housley
- Episode 10: Jeff Davis 5
- Episode 11: Misty May-Treanor
- Episode 12: Lyndie Greenwood
- Episode 13: Chris Jericho
- Episode 14: Rachel Bloom
- Episode 15: Lea Thompson
- Episode 16: Katie Cassidy
- Episode 17: Brett Dier
- Episode 18: Emily Bett Rickards
- Episode 19: Jonathan Mangum 2
- Episode 20: Cheryl Hines
Whose Line Is It Anyway? Season 4 Katie Cassidy
Comedian Aisha Tyler hosts this improv comedy show where the actors on the show - Wayne Brady, Colin Mochrie, Ryan Stiles along with a special guest each episode -must put their comedic skills to the test through a series of spontaneous improv games, prompted only by random ideas supplied by the studio audience.
