Various cheats:

     Press [ENTER] then type any of the following codes:

Code                   Result 
free gold              Maximize Gold 
hoody hoo             +10 All Productions 
speed it up            Fast Build 
unpleasant dreams      Cataclysm 
yeahbam                Win Mission 
show fog               Reveal Entire Map 

Conjure Cheat (Requires Patch 1.2.0)

CHEAT CODE: conjure [front] [support] [support] x y
     The cheat code creates a company with the desired combination of front
and support units.
     This  cheat  will  also  allow  a  player  to  create the company at a
particular location if specified (x y).

Examples: 
conjure skeleton skeleton shadow_priest 
conjure cavalier sorceress warlock 32 32