watched the helvetica movie on sunday, excellent work! not to mention the great soundtrack, here the list:

The Album Leaf
Battles
Caribou
Chicago Underground Quartet
El Ten Eleven
Four Tet
Kim Hiorthøy
Motohiro Nakashima
Sam Prekop

not surprised after reading that director Gary Hustwit also made documentaries about Wilco, Robert Moog and Death Cab For Cutie..