Sent to you by Vihang Shah via Google Reader:
If you have a keyboard hooked up to your Windows Media Center computer, you'll beat out any remote user with this collection of 42 keyboard shortcuts courtesy of the Simple Help blog. Hopping between live TV, recorded TV, and then jumping to the Guide is as simple as using the following shortcuts:
Ctrl+T = Go to Live TVWhile they note the list is for Vista Home Premium or Vista Ultimate media center users, the list of shortcuts appears to have few if any variations from the list of XP Media Center shortcuts. Would you use the keyboard to control your media center? Share your media center tips in the comments!
Ctrl+O = Go to Recorded TV
Ctrl+G = Go to the Guide
Ctrl+R = Record a TV show
Ctrl+P = Pause a TV show