Spring Cleaning

I'm going through my bookmarks and trying to delete the ones I save with the intention of posting about. Here's a few things that I found interesting for various reasons.

Some Links:

• Pi: The Song
• Firefly rap album (actually, kind of reminds me of the Justified credit song). 
• The colour clock. Represents time as a hexadecimal colour value. Pretty. 

And some pics:

I saw this on boing boing. Smart ads strike again.