I know it's not specifically a funny thing, but these perfect little music videos bring a smile to my face. They're funny, clever, and the music is good. My little sister and Ms. Lee Radigan were friends growing up, and trust me, Amy has nerd cred going back to the early years.
And you know what? I really, REALLY like her songs. I recommend picking up her singles on iTunes if you like adorable, sweet sounding songs with wonderfully geeky themes. Save Me Mario in particular gets happily stuck in my head for days on end.