Used to have ramper that would "lip-marshall" the aircraft in. As you got close enough, if you watched close enough, you could see him mouthing "that's good, that's good", and you knew to stop. Arms kept moving the entire time.
He doesn't qualify, though, because he didn't know better.
So I'd like to nominate a certain newhire on the ER that felt (in 2007) that a black sweater with F/O epaulets outside really enhances the uniform.