The one that killed me the most was losing a 
profile shot of Li and Sakura changing the last 
two cards together in ep. 69.  I was so close to 
winning it, but I spread out my bids too much at 
that point, so I couldn't go any higher.  This 
was two years ago, and I still think about how if 
I'd only cancelled one of my other bids, I could 
have upped my amount for that cel and gotten it.  
I still look at cels of them together from that 
scene (and the sequence), but nothing ever seems 
to compare with that cel.  Hopefully it will show 
up again in another two years, when I have some 
more money to spare... : P

But, even though I've showed this one recently, I 
must say that I have seen opening cels from 
Rayearth before, but never had the funds at the 
time (or even the inclination, since there were 
other cels I wanted more badly at the time) to 
bid high for them.  And when Hikaru not only 
showed up, but went through a couple of times, 
with a vastly lowered price, I jumped on it.  So 
here's my first opening cel, something I never 
thought I would ever own... (oh, hope it arrives 
to me soon! ^_^)