When I try to open that site it won't work.

Have they got these on the list?

wrassle a grizzly bear (or a full-grown alligator)
walk a tightrope
climb a palm tree in your bare feet
sign a document with your non-dominant hand
peddle a bicycle backwards at high speed without losing control
walk on stilts
place the sole of one foot on the top of your head while balancing on the other