The US History Teachers Blog brought my attention to this video, How the Electoral College Works. The video, embedded below, gives a nice overview of the Electoral College. The video isn't perfect, I wish the producer had included that the number of Electoral votes a state receives is tied to the number of Senators and Representative it has. Instead the video simply stated that the number of Electoral votes is tied to population. Overall, it's not a bad summary of the Electoral College.
Another good video overview of the Electoral College can be found in Common Craft's Electing a US President in Plain English. The video can be viewed on YouTube, but cannot be embedded unless you're a subscriber to Common Craft's service. (Disclosure: I have an in-kind relationship with Common Craft).
Here are two short, fun videos listing the Presidents in order.
The "classic" US Presidents music video is the Animaniacs Presidents song. Unfortunately, it's a bit dated now as it ends with Clinton.
Here is a Flocabulary-style rap of all 44 Presidents. It's a clean rap and even if the chorus might drive you nuts, your students might like it.