wow, I finally found the way to this forum. I 
thought maybe it shut down. 

Anyway, I am definately guilty of hoarding also. 
My only excuse (weak though it may be) is that in 
three of the four cases/scenes, I did not 
actively seek the second cel. They where offered 
to me privately after someone read I liked a 
particular series or scene. Once offered, I admit 
to having a hard time saying no. Especially if I 
really like that scene. I will also point out 
that in two cases the cels are still rather 
different even if they come less than a few 
seconds apart. Pictured below is an example of my 
closest matching set. I think I posted them 
before but here they are.