http://www.americanframe.com - if you wanted to 
try framing yourself and need acid free archival 
materials, these folks are GREAT.  I can't 
recommend them enough.  All of the cels I have 
framed using them look great and were really 
cheap to do.  The ones I have done have stayed 
nice and fade-free (I keep them away from 
radiators and windows).  

All you need to do is plug-in your measurements 
and they will make a package for you including 
your UV protectant plexiglass, mattes, foamcore, 
frame and hardware.  If you use their acid-free 
paper mounting tape, that works great.  It's 
semi-permanent and can be removed simply with a 
little rubbing alcohol on a q-tip from the cel.  
I have framed 6 cels so far and I am ready to 
frame 2 more in the near future.  ^_^;;;

I should make a page on 'how to frame using 
American Frame'. ^_^;;  If anyone needs help, 
drop me an email and I will explain how I framed 
them.