Ed Force One
10 Year Member
Or his Justified character.
I've noticed that these actor cameos are kind of cool; it's them playing one of their notable roles, but in the Star Wars universe.
Clancy Brown - Unstoppable muscle-demon (Star Wars)
The Kurgan (Highlander)
Timothy Olyphant - Marshal (Star Wars)
Gina Carano - Kick-ass no-nonsense warrior (Star Wars)
All her characters (Everything)
Giancarlo Esposito - Intimidating evil (yet awesome) Moff Gideon (Star Wars)
Intimidating evil (yet awesome) Gus Fring (Breaking Bad)
Carl Weathers - guy who has a "job" for the main character, but it isn't what it seems (Star Wars)
Werner Herzog - Creepy/Awesome mystery character (Star Wars)
Creepy/Awesome mystery character (Everything)
One I haven't seen a past-parallel with was Titus Welliver. He was the Imperial Captain of the ship full of stolen Mandalorian weapons (Star Wars), but the awesome Hieronymus Bosch (Bosch).
Any other bigger-celeb cameos I may have missed?
I really like the justified series