I saw a lenticular 3D LCD screen at the Museum of Science and Industry in Chicago last week. It was mildly annoying. While it worked form multiple angles, I could not find a sweet spot. I could only get about 80% of the screen to be in ideal focus at a time. The remaining 20% looked out-of-phase.

The museum was excellent, by the way. One of the best science museums I've been to.