That's a tough one. I think . . . I would change places with a person of a different ethnicity than me, maybe a homeless person, so I could better understand the struggles they go through and be more sympathetic to mankind (I am not sympathetic, haha). Orrrr, I might just switch places with Hugh Jackman's wife just so I could have an excuse to spend a whole day with him. Nothing racy or raunchy, just an opportunity to hang out with him. :)
WIF someone told you they wanted a 40g tank and they wanted you to pick the fish, what fish would you choose?