New to the forum, so hello
I'm a big fan of Trip Hop and very disappointed how small the genre is.
Here are some of my favorites(Artist - Album), though some may be stretching "trip-hop" a bit.
Telepopmusik - Angel Milk
Bitter:Sweet - The Mating Game
Lovage - Music to Make Love to your Old Lady By
Zero7 - Simple Things
Mandalay - Solace
Olive - Trickle
Lamb - What Sound
Of course anything Portishead and Massive Attack. I'm also a huge fan of Bjork.