I play 40k too.
Tzeentch/Slaanesh Chaos Marines. Also got an Eldar army and some Daemons.
I have way more miniatures than I should... I also have a dwarf army, a goblin army, half a vampire counts army, some lizardmen, some regular Space Marines... And tons of other random minis for things like Mordheim and such.
I just love putting them together, which is probably why I love this lego wargame. xD