Don't forget that alt-shift-tab reverses alt-tabbing order. On XP and beyond, Windows-L locks the workstation, I LOVE that one. And of course, Windows-pause is system properties, useful for tech types. I used to HATE the windows button, now I can't live without one. For anyone who has ever lost a window on the screen because it's flown past the edge, alt-minus then m then arrows to move it around, or just alt-minus then x to maximize.