Jan. 21 is National Squirrel Appreciation Day, and we're here to help you celebrate with some funny videos starring the bushy-tailed creatures. In addition to learning some amazing facts about these ubiquitous critters, why not celebrate them by taking a look at how they've touched our lives? Over the years, there has been no shortage of squirrelly influence on pop culture. In honor of the holiday, we're reliving all of our favorite squirrel moments, everything from countless car commercials to Carrie Bradshaw's hilarious but apt comparison to their less-cute cousins. Click on and go nuts!