Though it's the Saturday Night Live cast’s job to keep a straight face while performing the silliest of sketches, nobody is truly immune to the giggles. Slacktory recently posted a supercut of some of the most memorable SNL crack-ups (and, no, it’s not just four minutes of Jimmy Fallon breaking). There are the classics known and loved by all, such as Chris Farley’s van-down-by-the-river speech and Will Ferrell’s cowbell crackup, but viewers are also treated to older gems featuring cast members like Gilda Radner and Bill Murray.