It's great having a window, seeing the sun every day; much better than the flourescent lighting I've been working with in my first year here. One additional benefit is a couple of squirrels that nest in a tree right outside the window.
This guy usually spends from 7:45am to 8:00 or so hanging out with me, depending on the day. Quite a trooper - the jump from the window ledge to the tree is not one I'd want to make.
More pictures of the little guy: