Four of Them

Joel McHale:
The Soup (woo!)

Donald Glover:
Mystery Team
Writing for 30 Rock

Alison Brie:
Mad Men (as the wife of an ad exec)

Yvette Nicole Brown:
Drake & Josh (as Helen)
Bit part in Repo Men

Gillian Jacobs:
Choke (she was Cherry Daquiri)
The Box (as the babysitter)
Gardens of the Night (okay, I've seen it)

Ken Jeong:
The Hangover

Chevy Chase:
If you don't know, go find out. I'm done with you.

And, Danny Pudi:
This commercial that didn't stop playing for months.