Agreed. At my program, initiative and general get along with-ness is far more important (in terms of ranking) than general knowledge... I mean, most junior residents aren't anatomy aces. Of course, we don't do a lot of pimping here... but places that do may have higher expectations.
Be present, have energy, and never ever:
1) sound like you think you know what you're talking about. we had one guy who was super-smart on paper, but was always letting us know how smart he was. One of the attendings asked how he did on Step 1 and his answer was: "260's...I think that'll play". Wow.
2) talk bad about patients (residents can do that, but students shouldn't)
3) ask "are we done for today?" We axed a guy who did this almost EVERYday. We were like, you're on an away, you don't know anybody in town, what the hell do you have to get away and do at 4:30pm??
4) piss-off any ancillary staff. we axed a guy (see #1) because several nurses, OR staff, CLINIC workers, and patients said was rude