Tonight is the 40th anniversary special of Saturday Night Live. There’s already a long list of alumni and former celebrity hosts scheduled to appear on the three-hour program. 50 Cent, Backstreet Boys, Kanye West, Justin Timberlake, Ludacris, Miley Cyrus, *NSYNC, and a lot more are either going to appear in skits or hit the stage to perform.

We will be bringing you coverage of each performance right as they happen. For now, watch Fallon and Timberlake rap 40 years of SNL memories above, and check back here as we update the post throughout the night.

Kanye West performing "Wolves" with Sia and Vic Mensa, "Only One" and more: