Hmm...I'd have to go with Summer/Ryan (I'm a sucker for people who all each other by last names and there's one scene in S4 when she called him Atwood and he called her Roberts, and I was all of a sudden like, huh, they'd be sort of cute together...not that I'd actually want it to go anywhere since I'm a huge SS fan, but still...)
Nathan/Brooke: This might be my first (only?) actual UC couple :lol: They just would have been kind of awesome.
And I've always been intrigued with the idea of Max/Maria after the New Years Eve episode of Roswell, purely on a fanon/AU base though.
Angel/Willow: This one is totally random but the episode where Willow joked about her and Angel being secret lovers or something, even since then I always had the vague idea in the back of my head :lol:
Sawyer/Claire: After Charlie died, I kind of wanted them to get together. He could help with Aaron, practice for his own daughter kind of thing, they could have been there for each other.
Now one that I actually feel/felt guilty about was Ben/Margene from Big Love, I shipped them since S1, but since she's suppose to be his mom, always felt a little guilty about it.
And I have no idea if anyone here watched Passions, but after reading fanfic Theresa/Chad totally became my UC couple. I always saw them as being similar in their actions.
I guess I have a few more guilty pleasure ships then I thought :lol: