PB’s for 9/25: McCain Stands up Letterman. Dave proceeds to catch him in the act.

1. Johnny Depp has signed on to do a fourth installment of Pirates of the Caribbean. Considering the considerable length of the third one, this makes me a little bit nervous. Depp will also play the Mad Hatter in Tim Burton’s Alice in Wonderland. Perfect.

2. The Simpsons will embark on their 20th season this weekend. Guest stars include Seth Rogan and Jodie Foster.

3. John McCain canceled last night’s appearance on Letterman because he was “racing back to Washington” to take care of the financial crisis. But he actually put Washington on hold to interview with Katie Couric instead. That Maverick. Such a rascal.

4. Speaking of rascals … this man broke wind on a police officer and was subsequently charged with battery.

5. And lastly, MySpace has partnered with Amazon to launch an interactive music service:

Starting in a few hours, MySpace members will be able to create an infinite number of playlists, each containing up to 100 songs. In addition, any song in the entire catalog will be searchable by song, artist and album, as opposed to the current set-up that requires visits to band pages in order to add songs to playlists. Members will be able to follow their MySpace friends’ latest playlists through a simple news feed interface.