You may have already found this clip, but I'm obligated to post any and all fans storming the field and subsequently tackled videos. Particularly when the mascot is involved.
KC Wolf shows outstanding pursuit from the secondary and the ability to make tackles in the open field. Herm Edwards should take a look.
I want a scientific study done to tell me what the average BAC is of the average fan rushing the field. I've had some solid efforts, but at no point does 'Hey, let see if I can score a touchdown' run through my head.