I think my corneas won't be a lot of good, but then again a blind person would prefer to be long sighted with an astigmatism than not be able to see at all and so anyone who needs them is welcome after I die. Likewise my lungs, which are clearing out nicely since giving up smoking, and since blood tests keep showing my kidneys and liver to be healthy I suspect they'd just need my medications flushed out of them.

If my death can save lives then I'm all for it :)