My worst cel-packaging experience was due to 
postal handling...  The cel was packaged in a 
flattened Priority Mail box, and there was a 
*huge* slice through the middle of it, like 
someone just idly dragged a boxcutter across the 
package.  >_<  I mean really, how does something 
like that happen -- was my package placed next to 
an improperly packaged set of knives?!

Luckily, the cel was double-boxed, so the inner 
box was not pierced, and the cel was fine.  
(Still served well enough to give me a heart 
attack, though. ~_~)

For a positive spin, my best packaging experience 
was when a seller sent me a cel inside a 
clearfile -- twas a nice bonus, and turned into 
something I use every day. ^^

Zenjirou