First thing: Thanks all!
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I would have NEVER noticed that 2011!
Actually this on is the most extreme of the 2011s.
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I'm trying hard to pick out these error coins, but I still can't really see the differences on many of them, including these!
The 2006 is a small piece of the ear. Compare it to a normal cent.

The 2011 is best spotted in the "11" of the date.
I suggest sorting by date. Check the obverse of a bunch then check the reverse.The 2011 and 2006 have many DDOs .
Keep looking, once you spot one the others will become clearer.