Robert Beltran. I think hes probably not that bad, but he just wasnt trying.
Chakotay's mouth said 'Borg cube closing fast', but Chakotay's eyes said 'Wheres my paycheck?'
From some of what he's said, he was actually thinking 'How obviously disinterested do I have to be before they'll sack me?' He'd asked for a better role, and then asked to leave, but they just held him to his contract and offered more money, so at one point he set out to get himself sacked. (According to his version at cons, that is).
If that is true, it is a sad way to kill your own career. How do you explain THAT to future directors looking to hire you. "It's not that I'm a bad actor, sir, I was just bored with the job and attempting to get myself fired."
Director of new project. "Fantastic, you're hired. I can't wait for you interpretation of MY script!"