The Jimmy Fallon Tonight Show is officially underway. From the evolution of hip hop, to U2 acoustic, to a parade of guests, here’s a look at Fallon’s first night.

+ Joan Rivers made her return to The Tonight Show after a long ban, and Fallon’s parents were in the studio audience. Let’s relive the moments, in GIFs.

+ Fallon invited Will Smith to be his first guest. Here’s a look back at the first guests on 22 late night talk shows.