As a break in the boss-by-boss breakdown of Ulduar fights, I wanted to go over a few general raiding tips for Rogues. Some of them may be very old ideas that you've been using since level 60, while a few others are new tricks that we've learned in WotLK. Hopefully you'll be able to glean a few good bits of information to take with you the next time you zone into any raid. There's nothing more important than properly preparing for a new fight, but knowing the general tactics for any encounter will make understanding new fights much easier.
First, however, I would like to comment on the new Overkill. Its new form is a significant buff when looking at total energy generated, and also for PvE Mutilate Rogues. However, it is a nerf to our 6-second burst window during a Cheap Shot -> Kidney Shot combo. I feel this will end up being a net buff for Rogues, as relying solely on the first 6 seconds of a fight in PvP has become far to gimmicky for us to rely on.