Also, if you have an iPad, there is an app called itube where you can select the channels your child can watch, as opposed to them being able to watch anything and everything on YouTube.

Thanks for the responses! My son loves Gangnam Style, too. He also likes Sylvester the talking cat. What about Minecraft videos? My son will go through them and some will be appropriate and others aren't.

My son on the other hand is very into evantubehd on YouTube. He is much less into trying to find anything inappropriate. He loves any kind of play through with angry birds, Legos and old Star Wars play sets. Evantubehd is the thing for him.

My 7 year old loves watching video game "play-throughs," but has to be closely monitored, as some feature really inappropriate language, or are for "rated M" games. There are several of the YouTube uploaders who ensure that their play-through videos are kid-friendly, though.

My 4.5 year-old loves videos of babies laughing (simply enter 'laughing babies' at YouTube). I think it's great because he's able to look at their faces in a way he can't with adults and children.