Originally Posted by Buff

my favorite genre.

Hooverphonic
Flunk
Air
Conjure One
Delerium (some of it)
Massive Attack (you didn't list it)
Sade
Olive
Supreme Beings of Leisure
Telepopmusik
Baxter
Dot Allison
Hertz
Lunascape
Endorphin
Terranova
Daughter Darling
Madita
Hybrid
Beauty's Confusion
Laika
Soulstice
Martina Topley Bird
Etro Anime
Xploding Plastix
Alphawezen
Airlock
Canidas
Crustation
Soma Sonic
Backini
Bowery Electric
Leftfield
Frou Frou
Jem
Halou
Smoke City

Not all of these groups are all trip-hop, but all of them have at least a few trip-hop songs. Most are exclusively trip-hop.