Submitted by GamblerShinobi t3_11xm9pt in television
I used to wonder this a lot, and I guess it depends on what you consider a sketch comedy show. Some variety/talk shows do sketches. Keeping in mind, I'm not talking about who has been in the most sketches, I think that would go to Keenan Thompson from his long career at SNL and All That.
I could name a ton of people who appeared in at least two based on watching SCTV, SNL, In Living Color, MadTV and Chapelle's Show. But two isn't a lot.
My best guess is Keegan-Michael Key. He was a cast member on MadTV, starred in Key&Peele, and hosted an episode of SNL. After browsing his Wikipedia page, he's done voices on Robot Chicken, appeared in w/Bob and David, and did a sketch on Last Week Tonight with John Oliver. While the last one is a comedy news show, it does regularly have sketches to end episodes. So I would count that as six for Keegan.
But there's a lot of sketch shows I haven't seen. Michael Che's, I Think You Should Leave, the new Kids in the Hall, etc...
I'd love to hear others' guesses. I might discover some new favorite sketches in the process.
beesmakenoise t1_jd3tcee wrote
The new KITH series has a bunch of talking head segments from some big stars - Katherine O’Hara, Pete Davidson, Colin Mochrie, etc so you could add to some people’s tally from that show.
Whose Line is it Anyway has tons of guests you might want to count too, though a lot are actors and not sketch comedians.