killer app must be any of my emulators and the ability to use my PS3 controller. as a person that spends a lot of time travelling, killing time by playing a bit of sonic 2 or 3 definitely helps and also brings back a lot of nostalgia.

i also like media players ability to play any video files without having to convert. i can just drag and drop any programs or films i have on my computer and watch them straight away.

awesome