I did EWR
in August on the 764. I presume that service from Houston is similar.
The 764 is a great aircraft-as the previous poster mentioned, the 2-3-2 layout is great. 86% of the plane has a window or an aisle seat and you are never more than a seat away from the aisle. The non-AVOD system is pretty good. They usually have a feature movie or two on different channels and then 7-8 other channels of TV
shows, etc. They cycle through every 4 hours or so so you can catch programs on different channels. There is also an airshow. They have a few games which can be annoying to use at first but are fine once you get the hang of it.
As far as food goes, on the outbound leg (daylight) we were fed three times. First time was a sandwich with snack, than a smaller sandwich, and finally a small snack. Drink service was nearly perpetual. On the way back (red-eye), we got a pretty substantial meal shortly after takeoff and shortly before landing.
Overall the flight out was very bearable. The flight home was not, but that was due to my seatmate...