CELEBRITY BIRTHDAYS (4/15/11):  Emma Watson - 21  Cute little she-witch Hermione in the "Harry Potter" movies ...

And here she is in 2000 at age 10 when she was introduced to the world as Hermione ...

--Seth Rogen - 29  Katherine Heigl's baby daddy in "Knocked Up", one of the guys in "The 40 Year Old Virgin", the cop in "Superbad", the Green Hornet in "The Green Hornet, plus the voice of Master Mantis in "Kung Fu Panda" and the alien Paul in "Paul".

--Emma Thompson - 52  Your hyperactive children know her as "Nanny McPhee" and Professor Sybill Trelawney in the "Harry Potter" movies.  I loved her in "Love Actually", cuz I'm sensitive like that.