Markus Neidel is a German concept artist who most recently worked on Black Prophecy, a sci-fi MMO.
You won't find too much sci-fi in this gallery, though. What you will find for the most part are some epic fantasy images that look so delicious you'd be forgiven for thinking you could slice them off your screen, put them on a plate next to some fancy cheese and then enjoy every damn bite.
You can see more of Markus' work at his personal site.
To see the larger pics in all their glory (or so you can save them as wallpaper), right-click on them below and select "open in new tab".