"The Dot and the Line: A Romance in Lower Mathematics" is a classic cartoon from Chuck Jones and MGM. It's a delicious cartoon, something you'll enjoy terrifically. It won an Academy Award. Watch it until the last second, because it's important for you to see everything. You'll know what I mean when you see it. I would suggest that you also maximize this to fill your screen, as some of the graphics will benefit from it.
It's narrated by the great Robert Morley, noted English actor and writer, who, according to the photos on Wikipedia had three chins even as a young man. (You'll recognize him immediately if you don't know him already just by his name.)
BTW, there's a fair chance that this will get cleaned off of YouTube shortly and the link I've posted will no longer work. The cartoon is copyrighted material, after all, so YouTube is likely to sweep it clear. Not to worry, though: if this proves to be the case, you can always click this link to search YouTube for "The Dot and the Line." The cartoon is 10 minutes long, so be sure to find something that's the right length.