Jeff Atwood ran with a neat utility that Scott Hanselman pointed out that someone else wrote that was inspired by someone other than that someone else.
Confused? Then forget that first sentance and go grab Atwood’s Clean and Zip Source utility. Install it and you’ll get a nice, new item on the context menu which will troll through a subdirectory structure, remove all the bin and obj dirs as well as source control files and binding info.
Very handy, very shiny. My only complaint is that I can’t configure it to ignore the files ReSharper tosses in my project tree, but that’s a minor nit.