So those of you who know me know that I have a mantra. That mantra goes something like this (depending on the amount of sleep I have had the night before): "Fancy tools make you weak."
While I was preparing to fill in for my buddy Mickey Gousset at Tech Ed, I downloaded the TFS Power Tool (this used to be called the Power Toys) to use in the session. I have to admit, I was impressed. I think that the Annotate and the Treediff features are incredibly useful and there is quite a bit of additional functionality included.
Anyhow, go check it out when you have a chance.
Happy Coding!