Coming back, the routing was BWI-BNA-AUS withno change of planes. They served Dolphins (like Pepperidge Farm Goldfish) on the BWI-BNA leg and some kind of snack mix on the BNA-AUS leg. I've also seen some individually wrapped pastries served on morning flights and there's ususally free coffee, orange juice and donuts behind the podium at the gate areas during the morning hours, here in AUS anyway. If the flight segment is under an hour and a half usually all you will get is the peanuts and drink service.
I'll be flying AUS-PHX-LAX-OAK-LAX-AUS in two and half weeks, so I'll probably be bringing a little extra food on board with me. (Oink, oink).