The show "Einstein's Wife" was not a NOVA program. The NOVA program that covered early Einstein was called "Einstein Revealed" and introduced his first wife Mileva. It aired back in 1996.
I found the new program very convincing in making the case for Mileva as scientific collaborator. The existence of citations of both of them for the 1905 papers looks genuine. Mileva, working with Phillip Lenard in photoelectric emission studies at Heidelberg U., kept Albert informed about this important discovery. His explanation of photoelectric emission earned Albert his Nobel prize. Various letters between "Jonnie und Dollie" talk consistently about "our research". Dollie (Mileva) sat in on Einstein's group, Olympia Academie, in Bern at the time of the 1905 work. She didn't say much to the other men, but it was clear that she understood fully what Jonnie (Albert) was talking about. I had previously thought Mileva primarily gave Einstein math assistance, because he regularly needed such assistance throughout his scientific career. But she flunked her own retake of the math exam in "fonktiontheorie" (calculus of complex-valued functions on complex-valued variables), considered a core subject, so maybe she wasn't so much a math assistant as a physics assistant. Finally, E. and M. seem to have discussed E = mc
2 a lot during 1905. In fact, Albert always needed assistants to discuss his thoughts with, preferably in german language. Mileva was the one on the spot in 1905. That helps to explain how he was able to publish 5 significant research papers, with 3 of them milestones of twentieth century physics. In addition, he reviewed a lot of published physics that year. How did he do all that and keep up his paid job as a patent technician? A bright physicist living in his house would certainly help.
The conclusion, if true, makes Albert Einstein out to be a less likeable person. He was daffy in love ("You little witch, I am nothing without you.") until he became a professor, and quickly, an important professor. Love became less important than scientific achievement. After arrival in Berlin, his love was gone. He only needed a woman who would keep a proper Herr Doktor-professor's household in good order without kids, and that he got from his second wife (and cousin) Elsa. In the United States (Princeton), he only needed a secretary (Helen Dukas).
Here are some links.
Einstein's Wife - about the film --->
http://www.pbs.org/opb/einsteinswife/about/index.htm
the Mileva question --->
http://www.pbs.org/opb/einsteinswife/science/mquest.htm
WGBH NOVA: Einstein Revealed --->
http://www.pbs.org/wgbh/nova/einstein/index.html
Einstein Explains the Equivalence of Energy and Matter --->
http://www.aip.org/history/einstein/voice1.htm
Cockcroft and Walton - 1932 - mass converted to kinetic energy --->
http://www.phy.cam.ac.uk/camphy/cockcroftwalton/cockcroftwalton11_1.htm