Thievery Corporation is the best at this sort of thing, IMO. All arists on the ESL label are really damned good. Maybe not trip-hop as much as acid-jazz/lounge music, but it's a sub-set of trip-hop to many.
Thievery Corporation -
Richest Man in Babylon and
Lebanse Blonde are my two favorites from them.
Thunderball and Federico Aubele are other standouts
Federico Aubele -
Postales
Thunderball