Dana Carvey was on Fallon last night, and he talked a bit about what to expect. In short: lots of his old characters. I’d say that a Church Lady sketch is pretty much guaranteed, and I would also put good money on a guest appearance by Mike Meyers for a Wayne’s World sketch. It should be great, really; many of Carvey’s characters lost a bit of their sheen when he was on the show thanks to constant repetition, but we’re far enough away from that now that it’ll be fun and fresh to see them again.