Know that title is awkwardly worded, but hopefully the meaning is clear....
I'll start and say (fairly or not):
Hugh Grant - public persona too miserable for him to be believable in comedic/romantic roles
Salman Rushdie - not interested after the hoopla around his fatwah
Pete Doherty - no desire to hear his music
George Michael - sordid escapades leave me cold
Marco Pierre White - no interest in his restaurants after tabloid dirty laundry