The most important keybaord stroke for me is Ctrl/Z (undo) 🙂
Also,I would recommend using Ignore Event Grouping instead of ungrouping and grouping events. You’ll get into a lot less trouble (and use fewer keystrokes). You can turn it on with the button on the toolbar or use the keystroke Ctrl/Shift/U. Better yet, you can remap the keyboard so it’s a single keystroke.
Gary Kleiner
Learn Vegas and DVD Architect
http://www.VegasTrainingAndTools.com