That one on I45 near Beltway 8 is an oilfield theme, derricks, donkey pumps and the like.
The one in North San Jose is kind of an Aztec pyramid-temple type thing, the Santa Clara one used to be a general circuitry thing, but when they moved they didnt' really go with a theme, more like a nice hotel lobby. I don't remember the theme of the other one that I went to in the Bay Area (in Campbell, maybe?), and the ones in Arlington, TX and Mesquite, TX don't really have a theme that I recall, but I don't get to them very often. As you can see, I really like Fry's -- I have to visit them when I see them on trips.
Out of curiosity, where's "here," Nightwing? I might like to see that Atlantis theme someday.