I've always gone for the "mad scientist" look, myself. Think Einstein, Doc Brown in "Back to the Future," or Brent Spiner's character in "Independence Day." These two would need to trade the suit jackets for lab coats to rock the look, but I suppose it was the Oscars, after all.
Not quite hair... but I went to a local director/actor konklave and have decided I need to get a 'cool' looking hat... not a ball cap or perhaps worse... cowboy hat... but some like those short brimed 'pork pie' jobbers...
Perhaps the cowboy hat would work if it was... (and I'd go for the sarape as well...):