The "jelly donuts" that they are eating are actually onigiri, Japanese rice balls. The black part is nori, seaweed.
Pokeballs can apparently catch things beside Pokémon as Ash catches a 'jelly donut' with one.
The rage attack that Charmander uses continues to be used until the battle is over. This is true in the game as well. Once it is selected you can not break the attack cycle until one of the Pokémon faints.
American Title: "Primeape Goes Bananas".