He's done a lot of other films,but they get overshadowed by the Star Trek and X-Men franchises.
So,2 votes.

Just used one vote, for First Contact. Nothing else he's done in movies has come close for me.

Had to go with First Contact and Logan myself. I still think Days of Future Past is somewhat better than Logan, but Logan doesn't have the icky Bryan Singer factor tainting it.

Plus, these are the two best PS performances anyway.

I agree with this (and I don't remember his performance as Leodragance (a minor character) in Excalibur; been a long time), but think that Logan was the better film, and Stewart carried more of the weight in it. I also agree with Linda that his work in First Contact was phenomenal. Maybe the best single acting performance in a ST movie.

If Excalibur has been chosen, then Excalibur shall be King!

But when asked these questions I don't ponder how good the particular actor made the movie, but how good the movie was overall since that's what is being asked.

I wouldn't pick I, Claudius because of Stewart's role there, but I would pick that as a pretty great series.