I did this for Illustration Friday's "poem" theme. I always liked The Red Wheelbarrow by William Carlos Williams (1923). We studied it at school and it was the only one I could ever remember.
Perhaps its because I'm yet to learn how to blend colour in photoshop, but I really like the flat colour areas I get with this technique. Its almost a print-like effect. (and yes, that is a towel on her head)