I finally finished the season. In the documentary (part 2 or 3), they show a few clips from "Transfigurations." I've watched this episode many times over the past 23 years.
Although I had always seen the gruesome hole in the side of the alien's face when they first rescue him, it was only now that I noticed that half of his left arm was gone in that shot and the first shot of him on the biobed. How could I miss that?