Well, a bit of free fun if you like airplanes. At DFW, there is a 'lookout point' in the center of the runaways. You follow the signs for the Administration building on the south side and turn down Corbon. It's monitored so smoking isn't an option, but it is a nice place to chill.

I was pondering Six Flags today (I'm on vacation) but damn amusement parks are geting expensive.