Talladega Superspeedway is NASCAR's biggest track. It definitely shows it. I recommend wearing a hat when you go into the track, because people tend to spill stuff from the bleachers and since you have to walk under those bleachers, you will be dripped on. It is really kind of gross, so wear a hat. It was warm there, so wear light-colored clothes. Don't forget sunscreen! You will be burnt! The NASCAR race was very good and definitely an experience I will never forget. Allow plenty of time before the race starts to get there and browse the different drivers semi's. Lots of merchandise for sale.
Yes, I highly recommend going, at least once. I will go back again sometime. My goal is to go to a different NASCAR race every year until I have been to all of the tracks. We saw a lot of interesting things, such as when we were waiting in lines to leave the track we saw a school bus that someone had transformed into an RV, it had a window air-conditioner out one of the windows. Definitely interesting. I would recommend either, leaving right after the race is over, or waiting a couple hours because traffic is horrible. We went about 12 miles in 2 hours. It was bad. But it was worth it!