Is AGP still usable?

Right now I'm running a crappy GeforceFX 5500, was thinking of upgrading to the latest and greatest AGP card so that I could play FEAR and such.  Thinking about it though, I could alternatively upgrade to a PCI-E board and mediocre graphics card for about the same price (no ATI, sadly, as I run a P4).  However, around about this time next year I'll probably be buying an entire new computer.  Is it worth it to bother to do an extensive upgrade, or is AGP still good enough to get away with buying a AGP card?

>>2
still usable but for the best AGP card it's not worth the price if you're going to get a new machine eventually.
QFT

Also, do NOT buy a board with AGP AND PCIe.
Those PCIe-slots are 4x, which means that they are NOT even half as fast as AGP 8x.

Think it would be better to just get a 360 for now?
Depends. If you just play games on your comp and do not really do (gephics-using) work with it and do not go on LAN-parties, then yes.