I can think of a handful of movies that have made me tear up over the years, hell, I don't even cry at Ole Yeller, but I just watched Temple Grandin on HBO and I had to wipe a few stray tears.
It's an extremely interesting and touching story about a woman with autism that not only earned a Doctorate in Animal Sciences, but became an inventor, designer, best selling author, consultant to the livestock industry and an autism advocate.
Truly an amazing movie about an amazing woman... you just have to see it yourself.