I have to congratulate snickers for creating a really great add. They have moved stealthy from funny to genuinely creepy advertising. The best line would have to be "I'm only trying to help... snickers!" as she grabs the trolley.
Watching this won't make me want to buy snickers, not participate in halloween, but i does make me want to shovel bags of chocolate into someone else's trolly next time I am at the supermarket.