While that is a great Intro I would recommend it to be more short, And not many people would get the laugh and the bf3 tie in with the laugh. And who would come and watch your video again if they know theyl hear a laugh in the beggining that they have no idea where its from and is kinda creepy lol try something like music, a beat, where the viewer can hum it and recognize your video just by your intro. I wouldnt want my viewers to recognize me by laugh maniacly lol