From the Snob:

Bubba Ho-Tep. (B+) Although many of my friends apparently disagreed, I thought this movie had a sure-fire premise: Back in the 70's, Elvis Presley got tired of the drugs and the fame, and he went and switched identities with an Elvis impersonator (who then soaked up the drugs and fame until he died of heart failure on the King's bathroom floor). (For another decent movie based on a similar premise, see The Emperor's New Clothes.) Today, the King is bitter, old, feeble, and living in a nursing home in East Texas. There he spends most of his time in bed, meditating on his decrepit physical state, missing 'cilla and Lisa Marie, and wondering about the meaning of life. That part of the film is entertaining enough, but then an evil soul-sucking Egyptian mummy shows up and makes things really interesting. I know you won't see it, but you should.