Females:
- Kelly Bundy
- Daphne Moon (Frasier) -- but only in the early seasons
Males:
- Maxwell Smart (Get Smart)
- The Tick -- especially the live action version
- Jethro Bodine (Beverly Hillbillies)
- Jake Harper (Two and a Half Men)
Funny how I can think of more men than women, when it comes to airheads. So much for sexism in TV!
Most of your poll options are from the movies, too, and not TV.