Animoto.com

www.animoto.com is a very good website for making movie,you just have to give your pictures and music and it will automatically generate a good movie for you without any cost :P.You can also give your own pictures by uploading from your pc or getting pictures from anyother website or you can also use pictures provided by animoto.com.For full length movie you have to pay but half length movies are free of cost, so try it and have fun :P