A number of these have already been mentioned, but are worth mentioning again:
Animal Collective - 'Summertime Clothes'
Animal Collective - 'Girls'
Beirut - 'Mimizan'
Realpeople - 'The Concubine'
Yeah Yeah Yeahs - 'Zero'
Yeah Yeah Yeahs - 'Hysteric'
Yeah Yeah Yeahs - 'Heads Will Roll'
Andrew Bird - 'Anonanimal'
Bat For Lashes - 'Daniel'
The Thermals - 'Now We Can See'
Dan Deacon - 'Snookered'
The Decemberists - 'The Rake's Song'
The Decemberists - 'The Wanting Comes In Waves / Repaid'
Peter Bjorn and John - 'Living Thing'
The Decemberists - 'Sleepless'
Doves - 'Kingdom of Rust'
U2 - 'Magnificent'
U2 - 'No Line on the Horizon'
U2 - 'Breath'
Silversun Pickups - 'There's No Secrets This Year'
Silversun Pickups - 'Panic Switch'
The Pains Of Being Pure At Heart - 'Stay Alive'
The Pains Of Being Pure At Heart - 'Young Adult Friction'
Morrissey - 'Throwing My Arms Around Paris'
Royksopp - 'Happy Up Here'
Flight of the Conchords - 'Hurt Feelings'
Flight of the Conchords - 'Sugalumps'
And this:
http://www.youtube.com/watch?v=7y-3aPi-cvg