How about ...
1. Gilligan and the skipper
2. Maroon 5
3. The Jolly Green Giant and little sprout
4. Batman and Robin
5. Barry Manilow
6. The whole cast of Frazier except Daphne and Roz
7. Dr Quest and Race Bannon
8. Johnny and Hadji
9. The Burger King
10. Captain Picard
11. Wesley Crusher (not by choice, see above)
12. Alex Plank
13. The Dog Whisperer, his male dog squats to pee