I'm a big proponent of old armies! I've got a Crimson Fists army made up entirely of
RT/2nd ed models, and it's one of my favorites:
Here's the whole army:
Captain Delgado and his command squad:
Sergeant Rico and his tactical squad:
Sergeant Villa and his rhino-borne tactical squad:
Lead tactical squad - the sergeant may be used as Pedro Kantor at some point in the future:
Techmarine Bob with his Thudd gun (counts-as Thunderfire) and the plasma cannon dreadnought:
My second dreadnought, with what I counts-as an assault cannon:
The Space Hulk Terminator squad, with "Bernie" the heavy flamer Terminator, who earned eternal glory in this battle:
http://www.dakkadakka.com/dakkaforum/posts/list/231337.page
I have a bunch of 2nd ed and modern stuff too, but these are just the oldest of the old school guys.