I don't know if it's the high definition televisions or what, but ever since we have had one in my house my dog is always watching TV.  I have never noticed this before we got the Hi-Def set, she loves to watch when there are other animals on screen and she will jump up and try to catch what ever runs by, it is pretty entertaining.  I never thought to video tape her doing it, recently someone took this video of their cat watching a hockey game, this surprises me because I didn't think cats cared about anything, just kidding!  After seeing this I will have to record my dog in action.