Car culture in America - license as a right of passage, parking lots, commutes, low-riders, big wheels, gun racks, tail-gating, etc.
US Malls vs. Chinese malls - teenage hangouts, food courts, forgetting where you parked,
US exercise habits vs. Chinsese exercise habits = more for the young than the old in US vs. more for the old than the young in China, gyms vs. parks, extremes vs way of life, etc.
Boating (it's the 4th weekend and I'm at the lake, but I know there is no culture like that in China so it might be interesting.)
TV - I'm amazed at all the reality shows on TV. In China, the only dvds we got were for the major shows like top model, apprentice, etc. Everything has a reality show here. There is even a show about teams getting wrecked big rigs off the highway.
College culture = greeks, sports, getting in,
Holidays - not just the usual, but how we celebrate, i.e. the multicultural influences, the varying attitudes about celebration, the commercialism, etc. (I would say festivals, but I think that is more a Louisiana thing rather than a nationwide thing.)
US cultural mores - puntuality, no littering, waiting in line, tipping, "no shoes, no shirt, no service."
Summer traditions
National and state parks
I can't think of any other ones.
