IronStar: Er...you have pre-AI lenses?
Which ones do you have/do you know they can be converted?
EDIT: That's one of reasons I prefer Canon. If it mounts, even using adapter, it works. Shame they changed bayonet in past, and lens to sensor distance at the same time so you can't attach FD lenses to EOS bodies and have infinity focus....
They did that on purpose and I respect them for that. It's the reason why you can plug any EF lens you like into a Canon body and know that it's going to work. If you're using something that takes EF-S lenses then you can plug any lens at all that you like in there and know that it's going to work.
Nikon opted to maintain compatibility and it means you have to do some more research with some of the lenses because they may or may not work the way that they should.
With Canon the biggest issue is that some of the lenses aren't fast enough to allow for AF to work. Especially when you're throwing in teleconverters and such.
IronStar: Don't think of FM and FM2 as obsolete, they are nice bodies. I do most of shooting on film, and no, I'm not nor lomographer nor hipster :P
D5000 has same sensor as D90. But ergonomy on the other hand is much worse. IMHO lack of in-body AF motor and CLS are major points against it.
Also to be mentioned is that manual focus on those tiny viewfinders is PITA. Especially as D5000 has x0.78 magnification.
Some day I really sure get myself a film body to go along with my dSLR, I've got some really good glass and I kind of miss working with slide film. Plus, with my light meter, I should have no trouble getting the exposure right.
That's probably the thing I like most about the P&S I'm using ATM, it has a live histogram and I can set it up to flash the blown highlights when I'm composing my shot.