Yeah. I never really talked Trek with my grandfather (he passed away eight years ago).
But I have seen all of the TNG movies and XI in theaters with my parents. Plus Wrath of Khan at a special midnight showing.
Oh, sorry about your grandfather.
I have only seen Star Trek XI in the theater, but I would have loved to see the others, too. I hope they make the next one in 3D. Wouldn't it be great to actually see the Enterprise fly by you?