last.fm creates a chart of all the music you've listened to. Mine:
Tahiti 80
Saint Etienne
The New Pornographers
Bonobo
Matthew Sweet
Sky Cries Mary
Doves
Zero 7
The Decemberists
Mogwai
Ivy
Grand National
Lloyd Cole And The Commotions
Lemon Jelly
The Blue Nile
The Golden Palominos
Lloyd Cole
Maria Bamford (comedy)
Steely Dan
The Church
For those keeping score:
English: 7.5
American: 6.5
Scottish: 2.5
French: 1.5
Canadian: 1
Australian: 1