Communicate Coughing -- If you try the Communicate Lite demo mentioned in TidBITS #199, and you leave it connected but idle in the background, it will make a slight coughing noise every five minutes to let you know you are still connected, much as AppleLink does. The reminder helps you to avoid running up a phone bill or running down a PowerBook battery. If you don't like the sound, you can turn it off, pick another one, or increase the time between reminders.
iTunes Apps Tab in Landscape?
If your iPad is locked in landscape orientation when in the charging dock, apps in the Apps tab of iTunes will display in landscape orientation. (This also occurs when your iPad is not in the dock but connected to iTunes via the charging cable while in landscape orientation).