User blog comment:Geomax/40k vs Sci-fi Tournament/@comment-49.144.109.11-20120703095358

I would suggest Eldar Psykers vs Jedi/Sith,

Imperial Guard vs... well a whole lot of fictional human military forces such as the USCM of Aliens vs Predator, or the UNSC of Halo, Stormtroopers from Star Wars, (needs to be normal humans though)

Eldar Psykers vs Asari Biotics (probably going to end in hawt alien sekks)

SPEHHS MEHRENS VS Mandalorians

Tau vs Covenant

Necrons vs Reapers or Strogg

Orks vs Mass Effect Krogan or Halo Brutes (or make it a 3 way fight)