I have! to say the,
Applejuice / Apple Faction: Imadori x Ichijou
Its just so different and they do fit well in a sort of werid way ^^;; I love Ichijou as a character and Imadori is truly just a plain funny guy to have on the show. He does chase after other girls but its always! funny the way they show it. Episode 18 is still one of my favorite episodes and by looking at season 2 opening, it looks like they are going to go on another Date...
A few others:
Flute Faction: Hanai x Mikoto -> I think it was the Flash-back episode, in which I really thought they did fit well together, but right now I dont know ^^;
Flag / Jersey Faction: Harima x Eri
Onigiri / Riceball Faction: Harima x Yakumo
-> Both pairings are interesting, I'm not fussed which way things go.
Hmm.. there are some other factions that are Interesting comedy wise (Banana Faction
) but its been a while since I watch the show and the ones above are the more serious ones I think fit well.