So here i share mine :
This thread also reminded me of the "Being relentlessly positive" day 9 daily. (Sc2 players might know that : http://www.youtube.com/watch?v=iCqwwTfXr1Q)
And thanks for linking that day9 daily, I have totally missed that episode!
I've updated the list with a few new songs, will keep on doing so throughout the weekend aswell.
The only motivation I should ever need to play a game is to have fun, and that stops happening too quickly because of a number of reasons (length of the game and pigeon-holed classes post Hell difficulty).
Only motivation I'd have to keep playing is PvP but we all know that is nowhere in sight.