Yep, always heard them called cheaters or cheater panels. Just saw one in black and white print rectangles pieced with strips of pink material at a LQS, didn't get real close to it, when I remarked how neat it was and what was the pattern, I was told it was a cheater panel. Boy was my face red :oops:
I have seen them that are scenes and also those that look like pieced work. Good luck.