During play, press Enter and type in the following cheats. Press Enter again to activate.

motherland <race> <#>       Level select
iseedeadpeople              Reveal map 
thereisnospoon              Unlimited mana 
allyourbasearebelongtous    Instant win 
somebodysetupusthebomb      Instant loss 
whosyourdaddy               Invincibility & One hit kills
strengthandhonor            Keep playing after losing in Campaign mode
greedisgood <number>        <number> gold and lumber 
keysersoze <number>         <number> gold             
leafittome <number>         <number> lumber        
warpten                     Fast construction                  
iocainepowder               Fast death                      
pointbreak                  Food                             
whoisjohngalt               Fast research                   
sharpandshiny               Upgrades                         
synergy                     Tech tree unlocked               
riseandshine                Set time to morning             
lightsout                   Set time to evening                
daylightsavings <time>      Set time of day                 
daylightsavings             Toggle daylight progression
itvexesme                   Disable victory conditions
thedudeabides               Fast spell cooldown     

Extra movie:
Beat the game on Hard to get a very short clip of StarCraft 2 characters running under the WarCraft III engine. It takes place after the football sequence in the end credits.

Another extra movie:
If you have beaten the game on both Normal and Hard, click 'Credits' at the Main Menu screen to see another short StarCraft 2 sequence.

Hydralisk Easter Egg:
A Hydralisk can be found in the second mission in the Night Elves Campaign (Daughters of the Moon). Use the cheat iseedeadpeople to reveal the map. Then scroll to the top right...the grey dot found between some trees is the Hydralisk. It will join you in your fight.

Play As The High Elves:
On chapter five of the Undead campaign, "Fall of Silvermoon", stop the runners and destroy the High Elf base on the upper region of the map. After you do this, you will be able to use the Banshee. Fight your way into the lower High Elf base, and use the Banshee's Possesion on a High Elf peasent. You can then use the peasant to build a High Elf base, allowing you to build all their units, and access all three human heroes.

Exploding critters:
Keep clicking on critters to make them explode.

Thanks to Revolution readers Ax002, W. Goossens, Gnome Effect, Sephiroth_00, Shinma, Gabriel Landeira, Brad Overbey, Bogdan, Adam, Zugeta, Deadpool, Ryan, Blake Hodson, René, OTK14, IcyFlame_919, Ray Maloney, SweBg, siNCon-, X-File, Arthas and DeathChilde!