im guessing most of u watch 'flcl/furi kuri/fooly cooly' already if ya dig da song they are from a band called the pillows
common songs played are

carnival
instant music
i think i can
blue drives monster
riding on a shooting star
advise
runners high

check the links below
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Ost 1
http://www.amazon.com/exec/obidos/tg/detail/-/B0000UX5OI/qid=1153937383/sr=2-1/ref=pd_bbs_b_2_1/102-1366399-7757703?v=glance&s=music

Ost 2
http://www.amazon.com/exec/obidos/tg/detail/-/B0002CHJ14/qid=1153937383/sr=2-2/ref=pd_bbs_b_2_2/102-1366399-7757703?v=glance&s=music
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Can you belive I still havn't seen this series? sorry man 2 much anime to watch lol

flcl was a crazy series, I have some music by the pilows I had to look on bitorrent to find them.

If you can find it, get the official album. lots of pillows songs, all of them awesome.

1337 Anime,too short though.Gainax made a similar one also,I dont know how many episodes though.