VBSEdit
I have been using a tool for a couple of years now that makes it a breeze to create simple or complicated scripts using vbscript or jscript. It has tons of samples, a debugger, and comes with an HTA (HTML Application) editor. A couple of years ago I thought I was done with using vbscript, but VBSEdit makes it so easy to build powerful scripts.
I just recently created a comparison tool to compare active users in Active Directory with users in our personnel system. The results of the comparison is an html report that is e-mailed to a group of users. I was able to create the comparison utility in a few hours using VBS Edit. I don’t know any other environment which would have let me accomplish the same thing in the same amount of time.