Some cool links

I found these all via various Twitter feeds. Still not sure what I think about Twitter but I like it better than I thought I would.

• Penn Jillette on counterintuitive advice and President Obama.
  
• A new idea for drug compliance testing from the Freakonomics blog.
  
• And, finally, today only, you can get William Shatner's classic(?) album The Transformed Man at Amazon.com for only 99 cents. Which is, you know, only 99 cents more than it's worth.