Arcade Fire - Funeral (I know it was released in 2004 but in Australia I'm pretty sure we only got it in February).
Sufjan Stevens - Illanois
Sigur Ros - Takk... as always, I love this band. Some people consider it dark music, I honestly find it uplifiting, moving, hopeful, all of that.
M.I.A. - Arular
Vitalic - OK Computer
The Presets - Beams
Bloc Party got a lot of spins from me earlier in the year (saw them live too) and I'll also give mention to Australian band Wolfmother, while they may not have made my top album of the year, they certainly win the award for creating practical hysteria over here in Aust! Beck's Guero was fun, love Girl.
There have been a lot of bands this year where I just haven't been able to/ got around to buying their albums but I agree with everyone else, this certainly hasn't been a dead year for releases.