Ok so I was thinking about anime that I hadn't seen in awhile, and I remembered this strange anime about a blob like monster that absorbed peoples bodies, this blob was on a spaceship that looked remarkably like a current day space shuttle. I cant remember if it was a series or movie, and it may have been on the Sci-Fi channel at one time. Also it may or may not have had a guy with a head shaped like a mushroom wielding a samurai sword that may or may not have been glowing.... lol I know this is all very vague but I figure it wouldn't hurt to ask around.