John Hurt - It'll hurt
Bruce Forsyth - Bruce is for the scythe
Prince Phillip - I have no witty comment here, I just hope the unpleasant old git chooses this year to make rude comments to Saint Peter and isn't allowed past the pearly gates as a result.
Can't think of causes, except maybe for George Lucas - Auto-erotic Asphyxiation involving a Jar Jar Bink's life size doll whilst holding a report on how much Disney have made from Star Wars.