Mike - couple of things to try before "chucking" any old spices.
1. A med-hot dry pan, place old spices in, and keep them moving - as soon as you really begin to smell them good - take them off the heat and use them.
2. Depending on the spice sometimes you canget one last good gasp out of them by microwaving them for 30 seconds - maybe a bit more...then use them right away.
T