I like Drum & Bass, Ambient/Downtempo, Hip-Hop, Rap, and a little Trance.
Drum & Bass: Aphex Twin, LTJ Bukem, Squarepusher, Danny Byrd, J Majik
Ambient/Downtempo: Fat Jon, Nujabes, Force of Nature, DJ Shadow, Future Sound of London
Hip-Hop - Pete Rock, 9th Wonder, A Tribe Called Quest, Blackstar (Mos Def & Talib Kweli), Kanye West
Rap: Nas, Jay-Z, DJ Premier, Three 6 Mafia, MF Doom, Wu Tang Clan
Trance: Anything with no vocals.
The above are just examples of artists who have more than one good song.