This is a program I wrote to help clean up directories such as .svn, bin, obj, etc. This came from needing to zip stuff up so I could email them only to find out several hundred megs of data was consumed by crap.
This version is cleaned up *dramatically* and uses threading (BackgroundWorkers) so the app doesn't appear locked up. It even features a cancel button when going through the directories have there is no cancel when it comes to deleting (however the OS will prompt you to make sure it's what you /really/ want).
Attached is the source built from Visual Studio 2008 SP1 and the binaries.