Please forget all these comments ;D
All the soft they told you were like “cripted”. You can’t do your own creation with your imagination with.
Personnly, I think that “Adobe After Effect” is the best.
It’s pretty simple to use (if you have some knowleges in the domain..) and very powerfull.
Check this out : http://www.adobe.com/products/aftereffects.html?promoid=DTERU
Window movie maker is the best for window xp user. It is easy to use and with small installation files. Besides window movie maker, AVS video converter is my favorite, open source free editing software Avidemux is also a nice option.
For mac,you can use free dvd maker for mac to make movies.
I have no great information that who is the best but i use that software which is very useful for me so that’s my favorite one.
this is software link you can check it and try to it.