Natasha Henstridge (Fenula Miresuvey) played opposite Christopher Lambert (Armiss) in the 1996 action/suspense "Adrenalin: Fear the Rush" which, by the way, got horrible reviews.
Dennis Quaid played a great slob/jerk/down-to-business guy in Dragonheart. He also has a pretty good raspy Calamari voice in that movie.
Gheorghe Muresan naturally talks like a Wookiee.
Joshua Jackson did a good job of playing an uncooperative, selfish, snot-nosed brat in The Mighty Ducks (especially the 3rd).
Jason Court as Kyle Katarn in Jedi Knight.
Danny Woodburn as Sorem.