1. Sue Ellen Ewing (Dallas) for reasons that really shouldn't have to be explained to anyone. Ever.
2. Basil Fawlty (Fawlty Towers)
3. Wonder Woman (Wonder Woman)
4. Samantha Stephens (Bewitched)
5. Dr David Banner (The Incredible Hulk - scared the crap clean out of me as a kid!)
6. Miss Piggy (The Muppets) - because it would be rude not to!
@Toni
7. Timothy Claypole (Rentaghost)
8. Hermann Munster (The Munsters)
9. Lily Munster (The Munsters)
10. Jennifer Hart (Hart to Hart)
11. Karen MacKenzie (Knots Landing)
12. Laverne (Laverne and Shirley)
13. Miss Piggy (The Muppets)
14. Peep-Peep (The Boy From Space)
15. Princess (Battle of the Planets)
16. Arnold (Diff'rent Strokes)
17. Maude (Maude)
18. Mork (Mork and Mindy)
19. Battery Sergeant Major Williams (It Ain't Half Hot Mum)
20. Frank Spencer (Some Mothers Do 'Ave 'Em)
My mistakes have been rectifed!
I really wanted to add
Penelope Pitstop and The Hooded Claw but they were made in the 60's and I grew up watching them in the 80's.