Musical health class?

Has anyone seen Grease 2? Because we're flipping between that and Walk the Line (and Joel Osteen, becase my sister wants to be a preacher's wife despite her Catholic faith. She does enjoy speaking in a Southern accent, though.), and I'm confused...and intrigued. We just got through the health class number (who knew you could rhyme so much with "reproduction"?) and it appears that there is next to no dialogue. Just some amazing musical numbers featuring high school students who are taking Metamucil.

I think I may have to actually watch this all the way through.