After the legally required Hoth levels, the game becomes a straightforward romp through the B-list locales of the Star Wars universe. But if you resist the temptation to name your profile POOP_FARTWALKER and instead insert the name "_Wampa__Stompa," you can control various baddies during the Hoth and Echo Base missions, making the game approximately ten times more interesting. As the cheat code implies, you can take control of a wampa (the snow monster that kidnaps Luke at the start of Empire) and go on a rampage throughout the base.
"Excuse me, it's my first time here. Where's the bathro-- AIIIIIIII!"
You can also mindjack a snowtrooper, or get in the pilot seat of an AT-ST and stomp around while feeling all the power a mechanical chicken can offer you.
"Just saying, maybe we should add some guns to the side and back, sir."