The basic these days is either a d* (for family events, etc) or the Nikon F with 35mm or 24mm lens (if I think it's going to be reasonably scenic), based upon compactness considerations. I keep a Kodak Tourist II with Tri-X in the desk at work. I love the F, but pocketable it's not, and if you add lenses your pockets start to get kind of bulky.

I suppose I could put a flash-bracket on my B&J 5x7, and keep it around the office instead of the tourist, but I haven't seen much at work recently that needed that big a negative.