Whose Line Is It Anyway?

Ryan Stiles, Wayne Brady and Colin Mochrie, along with the return of guest comedian Gary Anthony Willams, prove that comedy is a science with a guest appearance by Alfonso Ribeiro.

You can't help but laugh as Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Keegan-Michael Key, put their comedic skills to the test.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with the return of guest comedian Jeff Davis, prove that comedy is a science with a guest appearance by Karla Souza.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with the return of guest comedian Gary Anthony Williams, make comedy magic with a guest appearance by Yvette Nicole Brown.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with the return of guest comedian Jonathan Mangum, build a comedy empire with a guest appearance by Kaitlin Doubleday.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Jeff Davis, put their comedic skills to the test as they go for the gold with Olympic athlete Lolo Jones.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Jonathan Mangum, put their comedic skills to the test.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Jeff Davis, put their comedic skills to the test, with a guest appearance by 'NSYNC's Joey Fatone.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Greg Proops, put their comedic skills to the test. Guest star appearance by Tamera Mowry-Housley ("The Real").

It's laughs all around as Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Jeff Davis, put their comedic skills to the test.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Brad Sherwood, put their comedic skills to the test. Guest star appearance by Misty May-Treanor.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Brad Sherwood, put their comedic skills to the test. Guest star appearance by Lyndie Greenwood ("Sleepy Hollow").

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Gary Anthony Williams, put their comedic skills to the test. Guest star appearance by WWE's Chris Jericho.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Jeff Davis, put their comedic skills to the test. Guest appearance by Rachel Bloom ("Crazy Ex-Girlfriend").

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Jonathan Mangum, put their comedic skills to the test. Guest star appearance by Lea Thompson.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Brad Sherwood, put their comedic skills to the test. Guest star appearance by Katie Cassidy.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Jeff Davis, put their comedic skills to the test. Guest star appearance by Brett Dier of "Jane the Virgin."

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedian Brad Sherwood, put their comedic skills to the test. Guest star appearance by Emily Bett Rickards of "Arrow."

Ryan Stiles, Wayne Brady and Colin Mochrie, along with the return of guest comedian Jonathan Mangum, put their comedic skills to the test.

Ryan Stiles, Wayne Brady and Colin Mochrie, along with guest comedians Brad Sherwood & Jeff Davis, put their comedic skills to the test. Guest star appearance by Cheryl Hines.