it's surprisingly hard to find pics of this sort of thing... but here's a few ideas:
Warning: Spoiler! (Click to show)Reid on Criminal Minds, the multiple parts tucked behind the ears (require quite longe hair)

Josh Hartnett, not as long but similar messy ear tuck with some face strands. sort of a basic side part pulled back instead of to the sides

Johnny Depp, sort of top knot with free flow behind it. Little messy but good basic concept

Heath Ledger, highish top knot but messy

Beckham, Top knot and back knot (what I described earlier on)
