bds, maxinquaye is trickys only album that sounds like that, so for more of the same there is the holy trinity of triphop:
massive attack (dub and reggae inspired triphop), portishead (jazz insipired triphop) and gotan project (tango inspired triphop).
then there is of course tricky, which is tricky inspired triphop.
like i said trickys later work is one million percent more personal and quite apart from the sound on maxinquaye.
i love some of it and i skip some of it. you really have to be into tricky to 'get it'.
triphop is one of those genres that was assimilated into all music but didnt really go further on its own. but the remnants can be found in anything from nelly furtado to nurse with a wound.
these days they call it downtempo (i think) and there is a plenthora of awesome artists carrying the vibe on. bonobo, theivery corporation, tortoise, bugsquad, dj shadow (early work), nightmares on wax, unkle, amon tobin and so forth. go forth and funk my son.