Occurence: Incredible Hulk #300

When Bruce Banner voluntarily retreats into his mind, letting the Hulk free to roam the city, unleashed. When he starts to destroy the city, all the heroes try to stop him. The Hulk claps his hands together and blows out the Torch's flame and also knocks him unconscious.

 

Hulk's Thunderclap Feats

Incredible Feats of the Hulk Main Page