Doctor Who's [u]phone booth[/u] time machine
:-O You wouldn't be confusing Doctor Who with Bill & Ted, now would you? Phone booth indeed... pah! ;)
And while I'm being picky, Doctor Who is the name of the show, not the guy - he's just The Doctor. Except for that one time when they called him Doctor Who. But that didn't happen. And except for when they call him that in the credits, but that doesn't count either. So that's nice and clear.
DE