Cool idea
Well ... I used to work in hotels and have checked in Ian St John (ex-footballer), one of the Gladiators (sorry, forgot her name), Jenny Powell, Fay from Steps, Chuckle Brothers and a few others.
But those I've WANTED to meet .. Bruce Dickinson, Gary Barlow, Mark Owen, Howard Donald, Chesney Hawkes (yes, he's still gigging), 3 members of Def Leppard (Rick Savage, Viv Campbell and Joe Elliot), Jonathan Wilkes, Joe Pasquale and Jason Donovan. Also loads of other people too from when I was a kid.
Have also grabbed Bryan Adams's arse when I saw him in concert in 04
Am hoping to meet Mika and Jason Donovan (again) in May when I go see them.