So on a more humorous side of things I just read about robots being used to help the elderly. Wired's web site has a nifty article about robot nurses.
Now aside from the obvious where I'd take tape and ballons and have them walking around with extra's at the home. I could also get an RC controller and maybe have some fun that way. Nothing really serious mind you, but a geriatric geek could go to town with these if they really wanted.
Yes I know I'm evil, but I don't want to be bored when I get older. :P