They're both good movies, but I'll be damned if I know how they got stuck together like this. Robert Rodriguez directs with a lot of gusto, and Tarantino's script is solid, pulpy fun in the second half. There's some poorly modulated sexual violence towards women in the first half, a problem magnified by the jokey, one-note performance by Tarantino as the sexually predatious Gecko brother whom Clooney's more upright criminal is stuck with. Jesus, Tarantino was (and is) a terrible actor.
The second half goes on about ten minutes too long and bafflingly loses its antagonist about five minutes in. I enjoyed the movie, but I also felt a bit dirty afterwards. Harvey Keitel, George Clooney, and Juliette Lewis seem to be acting in (and reacting to) a completely different movie than anyone else. Their naturalistic performances accentuate the artificial grue and spew of the second half. Recommended.