Doug Stanhope. Best comedian I've seen in years. In one or two of the reviews i've read of his show he get's compared to Bill Hicks. Except, IMO, he has better delivery and is funnier. He's definitely not for everyone ("the funny thing about child porn"/"abortion is green" etc...), but if you're sick to death of the Michael McCintyre's of this world (UK stand-up reference - "Have you ever noticed how many people are reading at train stations?!?!!!?!?
" *Audience howls with laughter*) then you could do worse.
You can get quite a lot of his stuff on youtube. I particularly recommend 'No Refunds' and 'Deadbeat Hero' both of which are full shows and were, until a few days ago, available on there. I'd post the links but work have youtube blocked.