Depends on the trans person, really. Me, I'm female to male, so if I'm referred to as 'he', I get a giant buzz out of it. :D But I'm pre-transition, and not everyone knows (though I dress male full time), so I'm fine with female pronouns. Though I know some people who deliberately use female pronouns in order to piss me off, in which case said people need a kick in the head.

Though personally, I'm pretty laid back, so roll with the punches. Other trans people get hung up on it for various reasons. I have to say that if an MtF was dressed as a guy, she shouldn't get offended by being referred to as 'he' by the general public, because that's what she's presenting. Though again, people who do know she's MtF and use male pronouns to be offensive and annoying need a kick in the head.

I call everyone dude, too. It's unisex in my vocabulary. :D