I never considered the possibility of Pink being Jewish, but her name is Alecia Moore. I know a Jewish person whose maiden name was Moore, due to her father not being Jewish but her mother was. So Pink's mother may be.
The rest were not really surprises. And some of those pics were just bulls**t, as Britney, Justin Timberlake, Demi and Ashton, and the Beatles were pictured, and NONE of them are Jewish, so that was weird to include them. (And for G-d's sakes, MADONNA is NOT really JEWISH. Studying Kabbalah does not make you Jewish. Formally converting and having a Bat Mitzvah, at a minimum, does--not to mention raising your kids without, you know, Christmas--and she has not done these things. Stop encouraging her!)
"There is no use trying," said Alice; "one can't believe impossible things." "I dare say you haven't had the practice," said the Queen. "When I was your age, I always did it for half an hour a day. Why, sometimes I've believed as many as six impossible things before breakfast." --Alice in Wonderland