Clear Cache Tool
How many times have you reported a problem with website or web applicaiton and the level 1 support person on the other end says "eehh... clear your browser cache...". As you groan and go through all the nooks and crannies of IE to try to erase your tracks, you undoubtedly forget one and it plauges you throughout the support call.
Here is a link to a tool that will clear all cache and IE cookies, temp files, etc.