Jay Leno made an unexpected return to The Tonight Show on Tuesday.
The former host made a surprise cameo in the current host's latest viral sensation, a parody of Netflix's House of Cards titled (wait for it...) House of Cue Cards.
The two-part series features Fallon making like Kevin Spacey and Ellen Barkin doing a spot-on impression of Robin Wright. Where does Leno come in? Watch and find out!
Here's a look at other times Fallon and his guests have made us laugh: