Here are some animations i made. Some might be for Everyone, 6+, 10+, 13+, 16+, 20+ and thats all. Some might include violence and blood and mild language like Dammit, caca and ya... By the way, there all made by me!:
Search the ball:
Getting the double suicide sword:
Stick Man head shot: http://www.miniclip.com/games/sketchstar/images/animation_sources/2008/11/27/1211137/final/animation_1211137.gif
I can't say these are the best I have seen, but they are alright. Just like Ryan said, you need to have a faster frame rate. I think you should have them movie inch by inch, but have a really fast frame rate. When I do that, it becomes awesome! (idk if you understand) Lol! XD