What do you think the criteria should be for people to receive donor organs?

There has been some controversy surrounding Dick Cheney’s receipt of a heart transplant, as he is in his early 70’s. I also found out (today on the Today Show) that someone with money, like him, could register for multiple donor sites, by having private plane available to receive the organ from various sites, whereas a poor person would likely have only their local site available to them, if at all.

People die each year waiting for organs to be donated (heart, lungs, liver). There are more people needing organs than there are organs donated. Do you think there should be a cap on the age of recipients who receive organs? What do you think the criteria should be for recipients?