[dbyler]

This seems to be a usability problem: you tap something as complete and it disappears almost instantly. If you tapped by accident or didn't happen to be paying close attention, you could miss this animation and not realize what's going on. (This is one of the reasons I like that the Mac version keeps items on screen until you clean it up. Plus, it's satisfying to see the things you've checked off.)

One way to deal with this would be to keep completed items on screen for a bit longer. This would give users the ability to un-check an item by re-tapping on the checkbox (which, granted, may not fully undo the consequences of checking it off), or to see what exactly they've done before shaking to undo.

Even adding a 2-5 second delay between showing that the item is checked off and removing it from the table view would be helpful.