I like the cthulhu cuttlefish. All it needs is an evil intent in it's eyes.
I've seen other people doing amigurumi's here. Personally I'm more into regular sewn plushies, as I can't knit. (Or sew for that matter, judging by my work...) Neither are in a very large majority of content or popularity here. Probably has to do with the lack of yiff that can be associated with them. But I still like them.