I don't play JRPGs and have no interest in games like MGS4 for exactly that reason. If I want a movie I'll watch one.
Maybe I'm oldschool but I grew up with pac-man and so I play video games to play games. I don't mind short cut scenes to give perpective to the action, or in a WRPG or Adventure to move the short forward. But anything more than 5 minutes is way too long.
Generally 2 minutes is appropriate for games in my mind.