As far as pop-culture and film goes by far my favorite Okitas are
Masato Sakai in Mibugishiden
the actor in MOEYOKEN (the live action one---not the anime with the
daughters of the Shinsengumi whatever)
Now...I really think this young man would make a GREAT "live action"
PMK OKita
imagine him with very very very deep black/violet hair
http://tinyurl.com/3coudn
he has the balance of "cute" and a touch of possibly "crazy" in him
that makes him intriguing