Woah! So nice!
They do recall Geiger, but I love the fact that the hand in them is pretty subtle... it took me a few seconds looking at the work for it to jump out at me. It's not and over the top as Geiger's work. (Not that it's a problem either way, it's just great that it's different)
I like the starscape ones as well, particularly 'starscape 2a'. The quality of the colours reminds me of some of that classic fantasy painting, maybe it's the texture.
Have you experimented with combining those two in some way? I think it would be interesting and worth exploring.