Bill Murray! Excellent!
We have a few famous neighbours, although we live at the cheap end of the hill (ie the bottom) they live at the top, well I say live, they own property up there...
Mick Jagger, Johnny Depp, Jimmy Hill and Ferne Cotton (who we bumped into in an alleyway with her hubby to be the other week and little Alfie wanted them to kick his football!)
Best encounter was when we used to live in Putney - Becks and I went for a stroll on the green one evening and walked straight past Nick Clegg and his wife, he was frantic and very stressed!