Running list of the cast's hidden talents that were incorporated into the show

I'm sure I might be forgetting some, so please add them in if you can. This is essentially a list of the actors/actresses who brought their side talents to scenes in the show. So far I have:

Christina Hendricks (Joan) - knows how to play the accordion

Aaron Staton (Cosgrove) - can tap dance

Alison Brie/Vincent Kartheiser (Trudy and Pete) - can do the jitterbug

Robert Morse (Bert Cooper) - an old school song and dance man

Any others that were worked into plots?