The 50 mm is not VR, but it is a very fast lens and thus works well under low light conditions. It's also very sharp, which is what people like about it (I haven't used it yet but I'll be buying one soon). It goes for about $120 or so new, a bit less used.
Personally, I have a 1 GB Sandisk Extreme III (bought 2 years ago when they were still expensive) and a 2 GB Kingston Elite Pro plus an 80 GB Hyperdrive HD80 which I rarely use. Between those two cards, I can get up to 400 or so RAW+BASIC photographs without using the HD80, which is plenty most of the time for me. Eventually I'll upgrade to a bit higher capacity, but part of the problem is I'm not sure what camera I'll be buying next and whether it'll use SD cards (like the D90) or CF cards (like the D300/700/3).