Favorite character: Sarah! Although she's not at all like my usual favorite characters; I don't see myself in her, nor do I aspire to be like her. At all.

Ellison is a close second, because I do see myself in him at times and because I wouldn't mind aspiring to be more like him (also at times).

So why wouldn't I ship my two favorite characters on the show?! Plus with the show ending the way it did, there's pretty much open ground for throwing them together for all sorts of reasons. I like that in closed canon sources.