erik left this link in one of the comments, but i felt like it deserved its own post.

tin man alley:

Tin Man Alley, Philadelphia's premier gallery for the discriminating hipster, is the center for underground, lowbrow and outsider art on the east coast.

Tin Man Alley has been home to legends such as Tim Biskup, Shag, Chris Mars, Glenn Barr, Ron English and Mark Ryden. New work is rotated every six weeks to expose the public to hard to find prints and originals from artists from all over the country.

if i lived in philadelphia i'd practically live at that gallery. they also have a nifty bookstore.