Celebrity - Bradley Cooper, just to see what it'd be like to have so many birds gawping at me all the time!
Footballer - I almost said Joey Barton, just so I could spend a week inside his head. I think I'd choose Zlatan though, just to have such talent.
Member of a band on tour - Oasis, back in the day. I bet it was absolute carnage.
VT'er - Hmm... If I was allowed to remember the week I'd probably pick @mjmooney so I could have all that experience already. But then half the fun is making mistakes...
Citizen of a country - it's not a holiday. You've got to work for the week, grocery shopping etc. I'd pick India I think. I'd love to try a week there.
"Other half" - possibly Tess Daly, just to see why Vernon Kay keeps drifting away. Or Holly Willoughby. I bet she makes a good brew un all.
Car to drive - I wouldn't mind a week with an E-Type Jag.
Anything else, for a week - I'd be able to play the guitar, and sing in tune.