It doesn’t feel like it now but it was almost 15 years ago that I picked up a funny bootleg T-shirt in Tijuana, just over the US border in Mexico, of a funny yellow-skinned cartoon family called the Simpsons. Earlier, in my San Diego hotel room, I watched my first episode of the show, where a foul-mouthed spiky haired boy pulled a three-eyed fish out of stream. I thought it was oddly amusing, but I didn’t realise what a phenomenon The Simpsons would become. This weekend, the series celebrates its 350th episode in the United States – and creator Matt Groening says he wants to make at least 366 of them, so there’s one for every day of the year.