Fifty years on...

[Platapus]

Originally Posted by razark

If we're going with tricky answers, either Dale Gardner or Joseph Allen. They were the last two astronauts to operate the MMU on STS-51-A.

Edit:
Or, if you don't want to count the MMU/spacesuit as a spacecraft, Command Module Pilot David Scott, on Apollo 9?

Wow I would say you win on several levels with that answer. But yes, Dave Scott was the answer I was looking for.

You sure do know your useless space trivia!