Warning - this video will make you cry.

A great video of Team Hoyt, a triathlon team made up of dad, 65 and son, 34. The dad tows, carries and pushes the son, who can't walk or talk, through 2.4 miles of swimming, a marathon and 112 miles on the bike.

Seriously, if you can get past the music, this video will make you blubber after about 30 seconds.

Team Hoyt - Google Video Link

Update: The Google video link is dead, but you can find out more here: TeamHoyt.com