Mulgrew. Flemeth. (Kidding).

Levar Burton will always be reading rainbow guy, no matter what he does.

Zachary Quinto. Silar. One of the better villains, until the writers went on strike and the show fell off the rails. Granted, this likely just marks the man’s range as an actor.

John Cho. The Rise and Fall of Sanctuary Moon.

Koenig. Bester.

You could argue that everything Stewart does is equally well done. Scrooge. X. Gurney.