I have one of those microsoft mice that has 5 buttons (actually 4 buttons and a wheel that will click when pushed), when in internet explorer the 2 side buttons act like back and next buttons ... something you really get use to. Often times when I'm in VS net, I hit those buttons expecting it to take me to the code location I was previously (ie. hit f12 to go to a definition and then hit the side button to navigate back) ... and usually I am reminded that those buttons don't do that in VS.net (without an addin anyways) ... but today I was shocked when in vs 2005 it actually worked! Such a small detail but wow, very nice to have.