very cool. I use a spreadsheet to track which abilities are mapped to which keys across my various toons as well.

I've stayed away from the blank entries in cast sequence approach, because I think I'd have trouble hitting the button with steady timing. But this is a nice idea for those who use the method.

A recommendation though. You may want to revert the file to .xls format. Not everyone has office 2007 yet, and some people may be using open office.