The Mincing Mockingbird is one of my absolute favorite artists. His paintings, done in acrylic, typically have a lot of negative space and a lot of emotion.
I Have Only Heard the Moon Laugh Once, and Once Was Quite Enough
His titles are my favorite. They actual enhance the painting - giving a little insight to the subject.
Sinister Acts to Which Only the Moon Bears Witness
And check out his flickr for even more works.
Moments When My Gaze Goes Vacant
Five Years Spent Chasing the Horizon
And of course his current works are available in his etsy shop!