Gamespot fired Jeff Gerstmann after he did a non-glowing review of the new Kane and Lynch: Dead Men game. It turned out that Gamespot has a huge advertising campaign with the Eidos who published the game in question. Penny Arcade did the humorous strip above and they also did a follow-up post on the subject.
Here is the review that supposedly didn't get Gerstmann fired.
Of course Eidos has got so much free press for this that they were right to pull their advertising with Gamespot. You just can't buy publicity like this as the saying goes.