Socks

Mine are training myself to use pgdn instead of the mouse scroll
Shit tab to reverse tab through things
Using win7 search bar (windows key + r) to go where you want within windows, can just type what you're thinking about and hit enter and it works 80% of the time
ctrl f obviously
windows key + e for explorer
shift+ins for places you can't paste with ctrl+v
alt-3 for valentine's day

saw these on reddit today:
windows key + pause for system info
ctrl+shit+esc for windows task manager
shift+esc for chrome task manager

keep em coming