This year, we're keeping track of Saturday Night Live's funniest moments as they happen. Read "The Best SNL Sketches of 2017 (So Far)" for the latest laughs.
Part of Saturday Night Live's enduring appeal comes from actors cracking up during the telecast. You know the sketches are funny when even the seasoned professionals can't deliver their lines -- and it's best when this laughter becomes infectious.
Enter Louis C.K., this weekend's host, who can now add his name to the show's long list of breakers.
After delivering nearly 10 minutes of stand-up and holding an insane birthday party, C.K. took a turn as a Tenement Museum reenactor. His job? Deliver his best Polish accent alongside Kate McKinnon and tell offensive Italian jokes to show a group of visitors what life was like in a 1913 New York apartment.