Usually I don't answer these, but hee:
1. Best movie in the theater at the moment?
I know my answer for this will SHOCK you all, but... Iron Man. ;) It's snarky, it's fun, it's action packed... And RDJ wears a wifebeater for like half of it. What's not to like??
2. Best movie to watch at home at the moment?
I'm looking forward to my Netflix envelopes getting here tomorrow. I have A Guide to Recognizing Your Saints and Wonder Boys coming, so those.
3. Best movie to watch when you need a laugh?
Lately it's been Kiss Kiss Bang Bang. It's a freakin' hilarious movie. XD
4. Best movie to watch when you need a cry?
Er, "need"? @_@ One that always gets to me is Finding Neverland. Or the veil scene in OotP.
5. Popcorn: Butter or no?
Depends. If it's at home, from the microwavable kind, I love the buttered popcorn. If it's at the theatres, I never put butter on it.