Every once in a while I try to rename or delete a file in Windows XP and I get some type of error telling me it’s in use by another program. I found this nifty program called Unlocker which tells you which process is holding onto that file or folder, and gives you the option of killing it.

I like the spotlight feature on Mac OS X, and I ran across something similar for Windows called Launchy. You can launch websites and even do calculations in the Launchy window. Nice!