Owen Pallett played violin live for the Arcade Fire and also does solo work, which I think is quite incredible.
Off his first album, Has a Good Home, its really quite an awesome collection of songs that he threw together. This is probably one of my favorite songs period.
The Cn Tower Belongs to the Dead
another from Has a Good Home
Adventure.exe
A lot more songs I'd like to put into this post from this album, but I think 2 is fine and its also hard to find good studio versions on youtube.
His other album "He Poos Clouds." The album is internally very serious, but the motif of video games and the title suggests it is intended to be taken a little less seriously than presented.
Arctic Cicle
I'm Afraid of Japan
Both these albums have a good variety of different songs, they work well in playlists or albums. Give Final Fantasy a listen, Owen Pallett is pretty different for anyone else making music. I couldn't find many of what I consider his strongest on youtube, though.