Bread-Bakers v114.n021.2

I second the motion on never using Pam on non-stick pans.  It does 
leave a film and shortens their life.  If you like to spray, try a 
Misto pump-up sprayer along with your favorite cooking oil.  As such, 
you'll be spraying pure oil, no additives.  I use this for eggs with 
a non-stick pan.

I still use Crisco for bread pans.