a few things...
i'm pretty big on hip-hop — some of my favorites are the wu-tang clan, a tribe called quest, lil ugly mane, darc mind and nujabes. more recently i've been getting into 'noise rap,' e.g. clipping., death grips (exmilitary is one of my favorite albums of this decade, while midcity is a fairly strong contender for my album of the year). oh and also pretty much anything that mf doom touches is good in my books. aesop rock can be enjoyable too. spaceghostpurrp isn't a good lyricist but he's a lot of fun and the instrumentals are almost always great. i also really like the stuff that's coming out of the black hippy collective; kendrick's obviously put out some great stuff in the past few years but i was pretty fond of control systems.
maybe 'indie rock' is a pretty generic term, but i really dig stuff like why?, built to spill, women, grooms, titus andronicus, pavement, the dismemberment plan, etc. also going through a noise rock/post-hardcore phase at the moment, from the more post-hardcore end of the spectrum (young widows, the jesus lizard) to stuff like boredoms, melt-banana, etc.
i halso ave an affinity toward music with really noisy and very repetitive beats and i think that might be why i'm more of a fan of early swans than later swans. sometimes when i'm feeling morose or vaguely angry i just listen to a few songs from filth and it's strangely cathartic for me.
a couple of miscellaneous favorites:
foetus - hole
have a nice life - deathconsciousness
flying lotus - cosmogramma
slowdive - souvlaki