I cherry-picked this one. What kind of error is this? http://www.auctiva.com/hostedimages/showimage.aspx?gid=664795ℑ=104742202&images=104742183,104742194,104742202&formats=0,0,0&format=0
Looks like a cent that has been removed from a good luck encasement. In otherwords it is post mint damage not an error.
If there is an indentation around the edge Conder101's diagnosis is definitely correct. If not, the probability that he is right drops to 99-44/100%.
(brennn10 is my bro)-- It looks like the strike is shifted, and that there are two rims. I may be wrong though.