Probably the thing I've enjoyed more about Oxford than anything else so far has been the community of the Pembroke MCR (the 'Middle Common Room' - the fancy Oxford word for both the graduate community as a whole and the physical hang out room/bar that we have in college).
(Pembroke MCR members at our termly banquet a few weeks ago - so classy!)
Different college MCRs have different reputations based on their size and snootiness (there is one super posh college who may or may not be our neighbors to the east, *coughChristChurchcough*, who apparently have silver snuff boxes stamped with their MCR's very own crest in their oak-paneled common room, which is just... ridiculous on so many levels as to be barely conceivable). I think Pembroke's is perfect: we are a good enough size to have a lot of people turn up at various events, but not so big that you don't feel like you know everyone at least by face. We host a LOT of weekly events and are very active as MCRs go. So far, easily my closest friends and most active social activities have come through the Pembroke MCR community.
(Me and some Pembroke friends, looking sharp at banquet!)
We had a brief, pretty informal election cycle (everyone was running unopposed, so the competitive fire was pretty low), where I received some flak about not spelling 'checks' as 'cheques' on my campaign poster, but was forgiven thanks to my "amazing" photoshop skills:
(Yeah, those are money bags I grafted onto my hands. Such skills, I can't even.)
(Everyone's posters; clearly me and that one other girl missed the memo on which panel we should cluster onto)