Harry Hamlin was in Mom as a mean dad of her ex's girlfriend who dates Anna Faris. Not sure if I can watch him in anything and think of him as a nice guy. Loved him in LA Law and Lisa Rinna in Melrose Place.
Ken Marino in Agent Carter as a mob boyfriend.
Kyle in the 2010 Nightmare on Elm Street.
Not even fair to mention iZombie because of the Rob Thomas/Diane Ruggierio connection, but it's fun watching to see who shows up. Ryan Hansen was a marketing executive who is gay, Enrico as a bad cop, Percy as a tech genius, KB shows up narrating a 50 Shades-type book (Liv says, "people say I remind them of her"), Jason as the head of a military industrial complex company who is a zombie, Francis Capra has an appearance as thug #1 or #2, Daran Norris in an on-going role as a smarmy meteorologist, Ken Marino as a smarmy defense lawyer...