Update: This technique also now works with the iPhone 4S.
Update: See episode 702 for a new method of doing this.
Learn how I capture the iPad 2's screen to use in presentations and video podcasts. You must use the iPad 2 plus the HDMi adapter. Then bring the HDMI in to your Mac or recording device using special hardware and software.
With the most recent iOS on your iPad, iPhone or iPod Touch you can use AirPrint to print a document from some apps to some printers. Find out which printers are compatible and how the printing process works.