It's seems like we've got a narrative building folks. John McCain is trumpeting his experience, but it seems like all he's done in this campaign is highlight how many times he's shown a lapse in judgment and a failure to understand the facts. And about serious subjects like Iraq, the economy, ethics, and his own damn words.
Wrong judgment, wrong facts.
The following is a list compiled just with a few minutes of web searching. If you know of others, add them in the comments.
Loooong list, many links, handily compiled in one place for reference should you require such.