I really like Amy's work with the reaper model, it's so clean and the base really helps set the mood, also like demi said that board is just outstanding and really just WOW ! i'd love to see it up close and in the flesh.
I like the way the Necron is painted, to me it gives it an ancient and evil look intead of the usual plan mechanical look, which may be at odds with the nature of the Necrons. I am not too keen on the holding of the decapitated head though, I would have thought it would have cut it off and then dropped it for the scarabs to pic apart. Conflicting ideas in my head, sorry.
Amy's two pieces look wanderful to me. Cesnak's piece really seems to catch a whimsical expression on the character. Stefan's is very atmospheric with out being too overwhelming, and the gaming table is just gorgeous!