Casino Royale was the worst in the series. The plot went nowhere, three people died in the entire 90 minutes and Daniel Craig cannot act.
Back on topic, I don't really care about metascores because they include several junky publications that nobody likes *cough* Edge *cough*
I look at IGN and Gamespot scores, take the IGN scores more seriously because the reviews are better written and not biased, and UNLESS I have been anticipating the game for a long time, the IGN score must be above 8/10. Good Gamespot scores are a bonus.
Having said that, if it gets like a 4/10, no amount of anticipation will make me buy a game. The system's never failed me before, don't see why it should in the future.
If there's a choice between a 9.3 racing game and an 8.6 action adventure, I'll go with the action adventure. The scores and reviews just let me know what good examples of games within a genre are.
Certainly, some games are overrated, like GTA4, and some, like Tools of Destruction, are underrated, but the majority, like MGS4 (although some would disagree on that one) are scored properly.
(Former) Lead Moderator and (Eternal) VGC Detective 
