Lip Sync Battle is a popular sketch competition on The Tonight Show. Lip Sync Battle is a television show based on the popular sketch competition from The Tonight Show. LSB is hosted by LL Cool J for some reason. And Jimmy Fallon, John Krasinski, and Stephen Merchant are producing. Other famous people (like Dwayne "The Rock" Johnson, Anna Kendrick, John Legend and more for some reason) will be performing - sorry, lip syncing - to popular songs. On April 2, Spike will air that show. Got it? Good. I really don't want to go over this again.