Tunisian Crochet Hat
Hat is worked sideways in Basic Afghan Stitch (A.K.A. Tunisian Simple Stitch) with optional single crochet edge.
Great for both men and women. Easily adjustable for any size head.
Note on color choices: Stick to solid color yarns, any thing striped or variegated turns out REALLY weird because of the way a row is made. Go with stripes instead.