Heartwarming & Hand-Jerking: Only on the Internet!

Occasionally I come across something while browsing that warms my heart. Ad then, maybe a 1/4 of a second later I'll see someone's comment that either causes a LOL, or intense disgust with my fellows. Essentially, it's an "Awwww" type moment, followed by hilarity (mirth?) or disgust.
Rarely, there is a third combination, wherein some algorithm has placed a fascinating, or touching piece of information right next to a ridiculous piece of information. Case in point:
I googled eye-tracking mouse, because i though it'd be nice to have both hands on the keyboard for rapid typing, but I could use these pesky eyes for something like moving my cursor right there. You dig? So I came upon this video example of something exactly like that (http://www.youtube.com/watch?v=0s5iqRpWH9c), and following the video, I noted the top comments, as selected by Youtube citizenry, aka the Tubery. Someone commented that they are paralyzed from the neck down and have been using such an assistive device for years. The next comment, with only 2 fewer 'likes,' well...

There ya go, America.