In other news, I will freely agree with kallah that snark has no place in a good review and exists only to show off the... I don't know, bitch skills?, of the reviewer. That being said, Anthony Lane's review of "Revenge of the Sith made me laugh very, very hard. (Warning, spoilers.)
I don't know what it is, but there's something about a viciously sarcastic review of something bad that strikes a chord in me. J.D. Considine is a good example of this-- he's a music reviewer, most famous for one-line stinging dismissals of albums. (His most famous was his review of Quiet Riot's Condition Critical, which read, in its entirety, "Prognosis: Terminal." This was the inspiration for the scene in This Is Spinal Tap, where the review of Tap's album Shark Sandwich was "Shit sandwich.")
(That particular scene also has the best dialogue exchange in the movie, thus:
Marty DiBergi: The review of your album Intravenous De Milo: "Their songs are treading water in a sea of bad poetry and retarded sexuality."
Nigel: Well, that's just nit-picking, isn't it?)