Wonder of High speed Camera : A really fun to watch

I found this video.. I hope its worthy to share..

Do comments !
[youtube=425,350]7S040p2UNt4[/youtube]

If it is in english then it would be much more better. Also when we watch this video then we are silently watching, but why they are shouting oooouu...... like that ............ dnt understnd :)

Because there are so many people watching together and it happens.. !

May be they are not aware of these things before and also they are so EXPRESSIVE :)