I'm really digging Arian Noveir's series Super Heroes Painted. Arian captures the essence of each character with some well placed paint splatters and shapes. Each one has a great unique look, but also fits in well with the series as a whole. The paintings look minimalist, but give away enough details to clearly see who the character is. If you like these, you can get the prints on Society6.
There is one thing all great presidents have in common: being a badass. Jason Heuser (SharpWriter on Deviant Art) perfectly portrays this concept in his awesome presidential portraits. This series has everything from fighting robots, zombies, and gorillas to riding a grizzly bear to victory. Make sure to check out his other paintings on Deviant Art, he some truly great work.
Just when you thought you've seen every method for creating paintings, another Amy Shackleton comes along. Amy creates these psychodelic paintings without a paintbrush.The great lines and forms of her paintings are created by applying paint with squeeze bottles, and allowing gravity to do the work. Check out the video below for a cool demonstration.