Yup, due to popular demand, we are going to look at Disney this time.
These guys are perhaps the most famous subliminal messengers of all time. You will find YouTube and the rest of the web literally strewn with content of either sexual or deviant nature hidden cleverly inside movies from the Walt Disney Empire. Everything from erections in the priest from the Little Mermaid, to penises (penii?) in the Walt Disney logo, to the word sex written with stars in the Lion King, nudity in Who framed Roger Rabbit and many, many other instances of inapropiate images in the movie. Think of the children, for Christ's sake!
However, a very logical conclusion to this odd streak of adding this to movies is animators. Usually, animators in studios have shitty jobs. They have to do most of the hard work (drawing and actually animating the movie), and yet nobody gives them any credit and they aren't very well paid. So a sensible explanation is that the unrecognized arstists and animators like to hide words and stuff that only keen, usually adult eyes will notice just to relieve the daily grind and have some fun. It would not make sense for Disney to actually want to pervert children, since the only thing they want is money, and perverts are not a good money source. Another thing is that these subtle references probably don't work on little children, and the only people who actually notice are those that watch the movie fram by fram trying to find something.
Free time, huh.
On a closing note, here are a couple of videos that show messages. Some are pretty impressive, others require the consumption of hallucigens to understand, but we can all agree, there are a lot of these videos.
http://www.subliminal-video.com/lion-king-subliminal-messages/
http://www.youtube.com/watch?v=73fCLx-mFLg
Seriously, damn. These dudes need to get laid more.