Jennifer Aniston, Betty White + More Make It Better For St. Jude

Dear celebrities:  You melt our icy hearts you when you use your powers for good and not evil. Especially when you help some kids in the process.

St. Jude Children’s Research Hospital, the brainchild of actor Danny Thomas now championed by his children Marlo and Tony, is a hospital in Memphis dedicated to helping children “fight cancer and other deadly diseases.” And while the work St. Jude does is incredible, even more incredible is that the kids' families are never asked to pay a dime for the care their little ones receive.

The hospital is now celebrating its 50th anniversary of saving lives, which means there’s no time like the present to pull out all the stops when it comes to fundraising.

Take a look at how the Beatles' 'Hey Jude' is breathing new life into a very deserving charity -- and see how many celebs can you spot in the video.