When working on different PC's with different monitor set-ups, its easy to lose the graph editor, schematic view, and other windows. Here's a nice little script I found at CGSociety. Just open up Max, double click the SnapWindows.exe and all rouge windows will now be back on monitor 1. Great stuff!
Disclaimer: I did not write this script, and have no idea if it will cause your PC damage. Use at your own risk!