Where are all the Easter Eggs?

I thought it would be fun to post a few Easter Eggs over the weekend,
you know... since it's Easter? But where the heck are they?

Easter Eggs, if you didn't know, are messages, jokes, images, sounds or behaviors hidden in the code or file system of an application or operating system as a gag. Easter Eggs are usually revealed by using an undocumented set of commands or keystrokes.

The Mac OS of yore was chock full of Easter eggs, but legend has it that Steve forbid them in OS X. If the legend is true, it explains why they are very few and very far between. 
Then again, many Mac OS X "features" are so poorly documented, or not documented at all, so it's often hard to tell what's an Easter egg and what's merely missing from the documentation!

So far, most of what I've found are within applications, not the OS.

For example, open MS Word 2004 (I believe it works in Office X too). Select Zapfino font. Now type the word "Zapfino"
and watch what happens when you type the last letter. If you misspell it you'll see the difference.

Ok, so that's not exactly hilarious, but I think  it qualifies as an Easter egg, nonetheless.

Monty Python fans will enjoy this: Select "Go to Folder" from the Go menu in the Finder and enter the following string

/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/test/

Now double-click on the audiotest.au file.

There are a few fun Easter eggs you can access from the Terminal. For instance, LOTR fans will appreciate this one.

Open the Terminal app and type:

grep OT /usr/share/calendar/calendar.hi*

(yes, the * is intentional and required)

Pretty neat, huh?

Since you're already in the Terminal (you can stay in the same window or launch a new one – your choice), type:

appleping

That one is good for a giggle, right?

Fans of BBEdit might enjoy this one: Command-click in the title bar of the About BBEdit box for a few goodies.

No it's your turn. Have you found any Easter eggs lately?