I read through the warmachine rule book last night. It looks like a game i could get into. Especially since the basic game size is pretty small. I am a big fan of miniature games that only required 5-8 models. Instead of 50-80. It makes playing the game on a budget a whole lot easier.
I decided to go with the undead army, since I am in fact a big fan of undead in general.
Reading the fluff for this force I am reminded of the Phyrexians from Magic The Gathering.