Here are a few awesome tribute sites, which will give you some extra background information on various lines in the song you may have missed or misunderstood:
- Here's a flash video with accompanying images for each reference. (Yeli.us)
- The BBC's in-depth tour of the song.
- Here's one of the many hyperlinked lyric lists that are floating around out there.
- And finally, the fine folks at JibJab.com made an awesome send-up covering everything that happened in 2007. (The name "Mahmoud Ahmadinejad" was MADE for that song, wasn't it?)