Mr. Edge brought these videos to my attention and I laughed my way through them both. The first is the Pachelbel Rant. This is a song I have loved for a long time. I probably have 5 different versions of it on my iPod. I love it and yet I did not see the connection this comedian did.
The second video is a fantastic view into many songs using the chord progression of C, G, Am, and F. It is fantastic. One note of caution, near the end of this one there is a strong swear word that was from one of the songs highlighted. It is at 4:30 mark so if you want to avoid it just stop before this time.