Meaning nearly all UK releases, and most US releases are the same :) Tho I notice with some of the NZ distributed ones the often leave off the region from the packaging. Grrr.
http://regionfreemovies.com/ was one of the sites
PS3 however... another story. Fussy at what they play (due to RCE change check?), hence all the 'PS3 safe' stickers on them now.