I really enjoy seeing illustrations that take advantage of that rough, sketchy look. Stavros Damos, a Greek artists comes up with unbelievable art, using rough lines to fill his drawings, which gives them an amazing look!
Here you can see some of his pieces. These are truly great. The details are simply awesome, and you can see his attention to every little part of his pieces. For more of his work, please visit his portfolio at Behance. He’ll definitely enjoy it. Cheers! 😉