With big money riding on the careers of top musicians, actors and sports stars, many are rumoured to have taken steps to protect the tools of their trade.
Potter may make come back
Author JK Rowling says "never say never" at possible Harry Potter come back
JK Rowling has admitted that she may not be done with Harry Potter after all.
The author has said that despite not having any current plans, she may well write another Harry Potter book in the future.
She said she thought the wizard's books were over, but "never say never".
If she does write another Potter story, it's unclear whether Daniel Radcliffe and Emma Watson would star in it.
Radcliffe jokingly said that he'd made Rowling swear she wouldn't write another Harry Potter book, as he thought 10 years playing the same character were enough and Watson has revealed that she almost quit the franchise when she was 16.
Harry Potter premiere
See all the action on the red carpet as the stars arrive for the premiere of 'Harry Potter and the Deathly Hallows Part One'.
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