We've gone through potential actors (past and present) who could/could have played a good T-800 Terminator. This follow up article is a look at possible alternatives who could/could have played a T-1000. As Jim Cameron put it, if the T-800 is a Panzer tank, the T-1000 is a Porsche sports car, Skynet's crowning achievement. Casting a T-1000 would be a more nuanced affair, physical presence isn't important, although still a consideration. Here's a look at potential candidates.