Hairspray isn't just another broadway musical remake, it's actually a comedy that breaks out into song every once in awhile. They showed about 15 mins at ShoWest and John Travolta dressed up like a large woman was hilarious. Think Grease. Just the fact that Travolta is in his first musical since Grease will draw people. Lots of stars, too (John Travolta, Queen Latifah, Michelle Pfeifer, Christopher Walkin, Amanda Bynes, and tons more).
I personally don't like musicals on the big screen at all, but this one is so different I may give it a shot. If the promotionals at ShoWest are any indication (entire cast & crew were there and performed three songs on stage), they're obviously betting big on it.