Kenan and Kel haven't aged a bit. Last night they reunited for a Good Burger spoof on The Tonight Show. Kel Mitchell reprised his role as the Good Burger counter guy. (Say it with us: "Welcome to Good Burger, home of the Good Burger, can I take your order?") Meanwhile Kenan Thompson played All That construction worker Lester Oaks, who orders a Good shake.

Tonight Show announcer Steve Higgins and Black Thought of the Roots stopped by. Jimmy Fallon basically did his imitation of Kel playing the Good Burger counter guy, which, whatever. But no one could do better than Kenan and Kel, the dynamic duo that dominated '90s-era Nickelodeon on All That, Kenan & Kel and of course Good Burger. Watch their Tonight Show reunion below.