Absolute winner would have to be Foals – Total Life Forever
but honourable mentions for (most of which have already been mentioned):
Errors – come down with me
Caribou – Swim
Crystal Fighters – Star of Love
The National – High Violet
The Black Keys – Brothers
Chemical Brothers – Further
Crystal Castles – Crystal Castles II
Broken Bells – Broken Bells
Two Door Cinema Club – Tourist History
Yeasayer – Odd Blood
Acolyte was probably the album of 2009 😉