Prince Caspian was the only really good one. You should consider seeing that one even though you didn't like the LW&W. I happened to read Prince Caspian first, way back when, and read all the others thinking one would be as good. They weren't.
You sure you don't mean Voyage of the Dawn Treader? Of all seven books, Prince Caspian had the least story and character development, and seemed to really only be there to set up the next two stories.
That's interesting, since most people think TLTW&TW is the best. That's probably the one they read first. Wonder if it has to do with which book of the series is read first?