Font Foundries :

2 Rebels
Adobe
AGFA
Chank
Comic Book Fonts
Dinc
Disturbed
Emigre
fontBoy
The Font Bureau
FontShop
Fountain
Garage Fonts
Hoefler
House Industries
LettError
Mindcandy
Psy/Ops
T26 (my current favorite)

And great typography history

Another great resource here.