We can fly standby, not sure if you call it a "discount" since we still pay money, and aren't guaranteed to fly.
I'd love to pay a little more, and get a guaranteed seat.
(on the flip side, all airline employees get a steep discount on fedex shipping, imagine if we couldn't guarantee they would get the package)
FedXman, go to the corporate homepage when at work home.fedex.com we get a couple decent discounts, but most others are crap.
We can get some cars at employee pricing, better to do your research first!
corporateperks.com
and lifecare are two that come to mind