It's funny, AAA is one of those things you will have and almost never need. Yet the day you don't have it, you will definitely need it!

It's worth the $50 or so a year just for the three complimentary tows / roadside assistance. They can bring you a battery as well now (but I believe you pay for the battery).

If you like maps they also have tons of free ones for just about anywhere, and offer insurance (not the lowest rates), and a travel agency.

One time I had a job interview in the morning about an hour from home. Made it to the interview, but came out to find a dead battery in my old Mazda truck. A quick call to AAA and they were able to come out, provide a jump start, and I went directly to the auto parts store for a new battery. That was worth the $50 alone.