Easter eggs:

Within the game, try typing the following words at appropriate places.
Before trying any of these, be sure to save your game!

mikespants = type this at any point in the game, then navigate through the
Easter egg screen.
eat me = type in front of the skeleton in the Hades Subway Station
whoami = type this at the credits screen and you will get a list of
people's names who worked on ZGI. Clicking on a name will type out a
personalized greeting from that person.
killmenow = type this at any point in the game.
huisok = Type this at the phone in Hades just before solving the damn
phone puzzle.

Fun or silly things to try:

Again, before trying any of these, be sure to save your game.

  * Examine everything on your Frobozz Magic Viewer so Dalboz can comment
on it, including the sword when it's glowing

  * Show everything you can find to Antharia Jack in Port Foozle

  * Repeatedly knock on Antharia Jack's door empty-handed

  * Repeatedly try to take the fishwife's wares without "disabling" the
alarm

  * Hang around in Port Foozle and listen to all the Inquisition
announcements

  * Repeatedly talk to all the people in Port Foozle

  * Repeatedly listen to the Talk to Me Grand Inquisitor doll

  * Repeatedly lower the fishhook into the water unbaited

  * Stay in plain view after setting fire to the doll

  * Read all the signs at the exterior of Steppinthrax Monastery

  * Go down into the well without a light

  * Enter one of the bottomless pits in GUE Tech's entrance area

  * Cast THROCK on the grass at GUE Tech

  * Try pushing the buttons on the vending machines without putting money
in them

  * Cast IGRAM on the "Corridor" instead of the "Infinite" when you see
the "Infinite Corridor" sign the first time; then walk through the doorway
while the spell is still active

  * Cast IGRAM on the "Infinite" and "Corridor" of the "Infinite Corridor"
sign at the same time
                                        
  * Look in all the lockers at GUE Tech

  * Cast KENDALL on the How to Win at Double Fanucci book

  * Try to turn on or remove the Permasuck after using it the first time

  * Cast REZROV on the locked doors at GUE Tech

  * read all the bulletin board postings at GUE Tech

  * Let the activated Zork Rocks explode in your hands

  * Attack the Six-Armed Invisible Bridge guard with your sword repeatedly

  * Cast REZROV on the S.A.I.B.G.

  * Cast IGRAM on the S.A.I.B.G.

  * Repeatedly show miscellaneous items to the S.A.I.B.G.

  * Try to bribe the S.A.I.B.G. with a coin

  * At the Spell Lab, put the spell paper in the tables in the wrong
order, then put it in the spell checker

  * Repeatedly try to approach Harry.

  * Try to cut off the snapdragon with the sword before you've sedated it

  * Click on the eggplants

  * Repeatedly look through the window at the Walking Castle

  * Read all the books in the Dungeon Master's library, and listen to all
his phone messages

  * Drink the Dungeon Master's cocoa

  * Read the different versions of the Dungeon Master's journal in his
real bedroom and in the mirror room

  * Repeatedly click on the scrambled buttons in the Zork Underground
Subway station

  * Lose three times in the Old Scratch game

  * Cast KENDALL on the Hades telephone (or, if you always cast KENDALL on
it, don't cast KENDALL and listen to the whole message; it can be solved
this way)

  * Give the five-hundred-zorkmid bill to Charon

  * Attack Charon with the sword

  * Repeatedly show miscellaneous items to the two-headed beast

  * Attack the two-headed beast with your sword

  * Punch the wrong card at Hades

  * Cast SNAVIG on Charon, then click on him

  * Cast GOLGATEM on Flood Control Dam #3

  * Repeatedly click buttons at the dam without using the REZROV spell

  * Go to all three time tunnel quests with all three totems; note their
reactions

  * In front of an open time tunnel, cast YASTARD on Dalboz's lamp

  * At the White House, have Lucy Flathead and the Griff repeatedly try to
take the Flickering Torch and the Bickering Torch, then repeatedly try to
pull off the boards

  * At Old Port Foozle, have the Griff and Brog repeatedly try to enter
Jack's Speakeasy

  * Enter the White House without a light

  * Take the Bickering Torch into the White House

  * Try to cross the chasm without knocking down the stalactites

  * Take the rocks at the White House

  * Repeatedly take grue eggs from the nest

  * Repeatedly boil eggs

  * Throw a raw egg at the stalactites

  * Repeatedly try to solve the chess puzzle

  * Stay in the Watch Dragon when it goes underwater

  * Repeatedly click on the inflatable sea captain

  * Tie the rope to a tooth and click on it

  * At Old Port Foozle, play the Pachinko machine in the back of the casino

  * Repeatedly mind-read Floyd, the bartender, and Jack (before and after
you accept his challenge to play

  * When Jack challenges you to Grue, Fire, Water, leave

  * Purposely lose to Jack at Grue, Fire, Water

  * Go to each of the different totemizer destinations, with Permaseal on
and off

  * Repeatedly turn the switches on the totemizer

  * Look at each of the different exhibits on magic at the Inquisition

  * Take the left or right hammer from the teletype and see what happens

  * At the guards' tent, listen to their entire conversation

  * Listen to the guard's conversations after you seal the tent shut

  * In the endgame, listen to all the Inquisitor's speech

  * After you reveal the electric fence, click on it while it's still
electrified

  * Let the Grand Inquisitor catch you at the end of the game