Can A0-A5 be reconfigured as Digital IO lines?

I'm out of pins with my project - I would like to add an LCD panel, but even in 4 bit mode I'm 3 pins short. I've tried using a 595 and I can't get it to talk to the LCD.

So....

I was wondering if I could reconfigure the analog inputs to be digital IO lines?

yes... A0 - A5 (PC0 to PC5) define on Arduino as pin 14 to 19

It's now in the docs, in the extended section.