Hrm let's see;

Public Enemy (Bomb squad)
Company Flow,
Madlib/Doom
Scorn (Mick harris),
...

And of course music I like in general except opera and happy hardcore fake techno bullshit.

As far as people whose music I admire... Thes One (People under the stairs), ANT, Brother Ali, Blue Scholars, Giant Panda, and of course Madlib J Dilla Pete Rock blah blah blah...

But music that is influential to me in basically anything - from any genre - that makes me go "Damn, I wish I thought of that"