The Tom Petty & the Heartbreakers soundtrack is really the best thing about 'She's the One' -- a thoroughly boring movie written, directed by, and starring Edward Burns (an actor I've always found rather bland). The film's New York City setting is another bonus; and John Mahoney gives a respectable performance as the father of Burns and his onscreen brother (though Mahoney doesn't act all that differently than he did playing the dad on "Frasier").
As far as the rest of the movie goes? I might recommend it if you're having trouble falling asleep. It's too boring to even comment on further.
I'll go ahead and grant 'She's the One' one-and-a-half stars (or 3/10) due to its few positive elements -- but the half star is strictly for the soundtrack.