In case you didn’t hear, the Libertarians nominated their presidential candidate a few days ago: Former Georgia Congressman Bob Barr. His website. Here’s a Newsweek article about him. I think he’s got a little better credentials than Michael Badnarik in 2004 who was a former computer programer.
A little trivia: The Libertarians are the third largest political party in the US. In fact, they are larger than all other independent parties combined.