Schumer's performance is a tour de force of razor-sharp comedic timing.
The title of the movie suggests its heroine is in need of repair, but the early sequences of her tottering home in high heels and sneaking outside during a date to get high defy condemnation.
You forget how limited so many movies' ideas of women are until Schumer launches into an extended tampon joke. It's a film about everyday sexism and double standards.
This is a film that belongs not to its director but to its star, who, if there is any justice in the world, is about to ascend from cult icon to mass phenomenon.
It's got no rhythm or reliable comfort zone. The jokes and ensemble scenes are all rushed, so you can't savor them or what anyone in them is doing.
Trainwreck ... has some very traditional romantic comedy elements, including a big, implausible finish. But even if you know where you're going to wind up, it takes interesting side trips along the way.
"Trainwreck" is not very good, but Schumer is frequently amazing in it. Officially, her fans will not be disappointed; not far below the surface, it's a bummer.
It's a familiar rom-com dynamic, but the reversal of traditional on-screen gender roles-combined with Schumer and Hader's easy chemistry-makes "Trainwreck" feel new and fresh.
There's a funny movie in Trainwreck, but you may have to sift through a lot of debris to find it.