How big is a Calorie or a Joule?

Mr Rudolph talks about Calories and Joules, and burns a little food in the process.

[trollobite]

Nice video dude, I've never seen anyone actually burning the food which is a nice touch. By the way, it's not just the US still using Calories it's the UK too because we jump between imperial and metric depending on the subject but worse still, we jump between the 2 for the same subject but depending on the scale position. EG Temperature, when it's cold we tend to reference around centigrade IE it's minus 2 degrees but when it's warm we switch and complain by saying it's going to be in the high 80s today.