I can highly recommend the Visual Studio plugin Resharper, I found it nearly as fun as Tetris.
I just found this really nice service called Browsershots.org. You just type in an URI some distributed computers (mostly Linux) visits the site and creates the screenshots. The images appears after a few minutes.
It is perfect now in the changing times between IE6 and IE7 since it's not possible to have them installed on the same computer. It can be done with the unofficial stand alone versions, but I heard it doesn't work that good.
Browsershots.org currently supports the following browsers:
# Linux: Dillo 0.8, Epiphany 2.14, Firebird 0.7, Firefox 1.0, Firefox 1.5, Firefox 2.0, Firefox 3.0, Flock 0.7, Galeon 2.0, Konqueror 3.5, Mozilla 1.7, Navigator 4.8, Opera 9.0, Phoenix 0.5, SeaMonkey 1.0
# Windows: MSIE 6.0
Now we only need a similar thing for Safari.
Update: They have now added support for Safari.
Thanks to Edoardo Sabadelli for writing about it in his blog. And of course to the people behind the service for making it happen.