I found this video through the Passion for Puzzles blog. It’s a hi-larious music video about sudoku obsession. Passion for puzzles points to where you can find the video on YouTube, but you can also view the video on the Sudoku Song blog (I recommend going to the blog.)
The blog includes a band bio and lyrics. Here’s a sample:
Let’s Sudoku, let’s Sudoku,
Crosswords just won’t do,
You’ll know why our thumbs evolved,
When you get your puzzle solved.
Of course, reading the lyrics is no match for watching the video, which just gets progressively more absurd. Enjoy!

