If the rumours are true, 'guest hosts week' will be the permanent format from next year.
I can see him retiring from this sort of work in a few years time.. hate to say it. I know he says he's 'under doctor's orders' and everything but something strange.
Watching tonight and thinking C4 could do a lot worse than lure Lorraine Kelly from GMTV, though that would probably be going more the Richard and Judy route again, with the option for a bit more journalistic content (and lifestyle crap) along with guests.