Actually, Jen's not the only one. Since Fried reported his findings, other neurons have been found that flash only for Julia Roberts, or for Halle Berry, or for Kobe Bryant. It may be that certain very famous people literally occupy special places in our brains. The question is, how?
The curious part was that there's a particular neuron devoted to images of Jennifer Aniston.
Not that weird, if you know your history. The grandmother cell was hypothesized almost half century ago. Its a little irresponsible (maybe just not very diligent) on NPR's part not to mention it.