Best - Anita Dobson (just after she left eastenders) - very down to earth and friendly.
Worst - Adam Ant - "I don't travel in the back of a DC10 I want a free upgrade, don't you know who I am?"
Actually thinking about it my most favourite was Princess Diana - we had no pre warning that she was travelling and for a few seconds I didn't even recognise her and thought she was off duty cabin crew!!! Probably due to the Louis Vitton luggage which looked very fake to me.