I received my latest package from Anime Chaos, 
and it was bent in half by the USPS.  Everyone 
knows Chaos packages them very very securely. It 
seems like it would have to be intentional for 
one to bend it the way it was because the 
cardboard is so stiff.  Fortunately the cel 
wasn't badly damaged, it had a few "Dents" where 
the bend was.  

For overseas shipping, you really can't blame it 
directly on the USPS, since other parties are 
involved.  I'm pretty sure the USPS has a 
contract with a bag/parcel handling company at 
the air port, and the Japanese Post Office could 
be involved as well.  I had a cel shipped in a 
plastic case from Japan and one side of the case 
was shattered.  I really wonder how much care 
goes into our package deliveries :)