Just a few?! Damn dude, you're making me jealous. ;)
The terrain you're shooting on; large board or small one just for photos?
Everything is done in a lightbox of my own design (super cheap solution, I bought some discounted painting canvases, pulled the frames from these (except for the back one, which I kept intact and painted as a background), glued the frames together, and tissue papered the top and sides. I then have three second hand desk lamps to provide illumination.
Most of my pictures are done on a small set piece I made specifically for the task of photographing Battletech Miniatures. It's in two pieces, a foreground which gets used in all pictures (and can be rotated for variety), and an optional "mountainous" background which is meant to add variety and help compensate for gaps in the foreground piece.
A few pictures are done without this set piece. Generally these are made with a Woodland Scenics Project Sheet ("Summer Grass", in this case) as a background and often feature terrain templates that I've made.
For Aerospace miniatures, I generally leave out any ground elements and just photograph against the "sky" portion of the backdrop.
You can't have too many Shrek or SRM Carriers in your force. >:D
And this is absolutely correct.