The Pig
The infamous and extensively stressful stress relief pig, which is responsible for this website and was tickled or crumpled hundreds of thousands times by people from all over the world. Sadly I am not the rightful owner of this wonderful flash clip, but as I stumbled upon it I discovered its strange effect – seeing this cute piglet hysterically screaming and squealing made me feel.. more calm.
Be warned: effect may vary depending on the person. Also some kind of twisted sense of humor would definitely help.