Very nice episode it gave us background on Sandy Cheeks. It showed how passionate she is for her home town as well. Really liked the song (which paved the way for newer Texas songs today). Like abney said, it's a classic.
I can't help laughing at how people call this episode offensive. People need to chill and learn to take a joke. I don't get offended whenever those hockey-playing fish with Canadian accents show up, I actually find it funny.
Anyway, I like that this episode has a slightly more melancholy story, it's a side of Sandy that we rarely see, so it was interesting. The chase scene is hilarious too and really fun to watch. The moral at the end is too obvious, but I still enjoy the episode as a whole.