4. Lisa Kudrow did research about headaches.
For Friends fans, she will always be Phoebe Buffay, but those with a deep interest in the world of science, know that they can find her in the credits of another type of work. Apart from having earned a degree in Biology, she was part of a study regarding migraines and other types of headaches. Because of this, her name is still a reference on the NCBI website (National Center for Biotechnology Information).