I don't know if anyone else has been reading the letters section of WD, but in 312 and 313 they had the "I've got a bigger army than you" competition.
I've just got my newly ordered bits through, and I've been re-writing my army. The original contender (Mr Kelly's Tyranid Hive Fleet Jormungandr) totaled 120 models. Without even trying to make a big army, I've counted up and my army is 135 models, or 141 if you count the grots as separate from their Big Gunz. And that includes Stormboyz, Kommandos, a Dreadnought and three Kans! A quick shuffle around and I can get that up to around 170 (drop all of the heavy support, bring in 14 stikkbommas and 20 shoota boys). An even bigger push (reducing the Stormboyz to 6 models) and I can total about 180!
I didn't realise I had quite so many models and that my Ork army could be so huge! Granted the huge army would struggle against tanks (3 burnas, 6 rokkits and 13 krak stikkbombs) but it'd outnumber just about anything else! It beats the 170 strong Nid swarm and is about equal to the 182 man Praetorians (although I think the Orks would beat them in combat!)
Now to get it all assembled and painted...