This place has been recently renovated (as of September 2009) to include a Wal-Mart grocery store. I don't think it qualifies as a "Supercenter" because it lacks a McDonald's and a bank and a vision department and all that. But I was pleased to be able to have an alternative for grocery shopping in the neighborhood.
After some growing pains experienced in their inventory, they finally started carrying the Yakult probiotic beverage in their dairy section. I drink this stuff daily to stay regular (become friends with your intestinal flora, I say), and have been miffed to find that it sells for $3 a six-pack. But this Wal-Mart carries the cheap, Mexican alternative Bio Salud for 88 cents a six pack!
But allow me to climb down from my gastrointestinal soapbox... The groceries at this Wal-Mart are not always the best quality (e.g. the bacon I purchased was quite fatty, and the shredded Parmesan was less flavorful than most), but you can find some bargains here. And then there's always the rest of the store to explore for those random items you never knew you needed.