I love utility software. I love software vendors like Moon Software, that produce targeted utility software like Password Agent and Backup Magic. I was reading Jon Galloway's blog the other day and found his write up about TeraCopy from Code Sector. TeraCopy has some nice features beyond what Windows gives you, such as restartable copies, but it also make Vista tolerable when copying files. It's a must have for Vista users or anyone that like RoboCopy.
While snooping around Code Sector's site, I found DirectFolders. I'm downloading it now, so I can't speak to it personally, but it like a very handy Windows Shell extensions that gives you a lot of nice quick-find capabilities for commonly used directories on your file system. Here's a short screencast that shows off what it does. This looks enormously useful.
These two utilities look like they might make my short list of utility software along with SlickRun and ClipPath.