I like Star Wars better as a movie. I consider Grease to be a musical, and I adore most musicals, so I'd have to say I like Grease better to sing, and Star Wars better to watch.

But I am also assuming that by "Star Wars" you mean the entire saga, not just one episode. Cause there were good and bad ones, and things that weren't as exciting as others in other ones. But overall I'd have to say Star Wars, cause I'm a Star Wars fan, have posters, books, movies, jewelry, T-shirts, puzzles, trading cards, figures and toys, etc.,(I collect), and even life size standups of Han and Anakin (the one from Episode 2).

Whereas on Grease, all I have are the books, movie, and soundtrack... oh, and a poster. ;)

Nightowl >8#