Here are a few of the crop circles I've found, see if you can find any others..

NOTE: Do not post Central Pivot Irrigation Systems.. they kinda look like like crop circles, but they certainly are not.. they look like this:

http://img454.imageshack.us/img454/2096/capture018nr2.th.png (http://img454.imageshack.us/img454/2096/capture018nr2.png)

For more information READ THIS (http://bbs.keyhole.com/ubb/showflat.php/Cat/0/Number/233262/an/0/page/0)

A manmade firefox cropcirlce comissioned by Mozilla for a major FF release.. in Amity, OR

Two intricate crop circles in a field in Barnsley, UK

Strange linear crop circles in House Springs, MO, USA

A Pacman crop circle in Reading, UK ..most likely man made ;)

A strange crop circle in Darfield, UK.. It was reported to the local media

http://www.e-wombwell.co.uk/Images/Stills/Photos/CropCircle-07-07-2002.JPG

http://www.e-wombwell.co.uk/CropCircle-07-07-2002.htm for more info