computer art
stuff painted with paint shop pro or painter. (wallpapers, etc...)
paintings
acrylics essentially
 
drawings
pencil, pen, the kind of stuff you do when you're bored in class :)
quake art
quake guy, shambler, ogre, etc...
doom tc
When I understood that it was possible to edit everything in doom, I started my own TC. but I didn't have any computer...that thing died, but the concept art is still here.
posters

T-shirts, posters, covers, etc...

cyber
concept art for a cyberpunk world
heroic fantasy
RPG characters essentialy.
comic
I started a comic based on the doom plot, maybe I'll finish it one day, who knows?
sketches New Word Disorder TC concept art