Carter, I have all of season 1 and 2 in both English and Japanese, so I can give the Hitler one a check and see if there's an English one.
I freaking love Lupin III. I can't discuss Lupin III without mentioning this…
Why did a movie with such a great beginning and my favorite villain have to suck so much!? ;__;
Here's everything I've seen:
Season 1 (subbed)*
Season 2 (subbed/dubbed)
From Russia With Love
Zantetsu is on Fire
Episode 0 ("First Contact")*
Secret Files (Pilot episode)
Return of the Magician
Strange Psychokinetic Strategy (This is one of the most amusing things I've probably ever seen.)
Secret of Mamo
Castle of Cagliostro
Dead or Alive*
The ones with the asterisks are my favorite ones. Episode 0 was especially brilliant.
EDIT: Yes Carter, the Hitler episode was at some point dubbed.