In IE 5, go to Tools/Internet Options and select Languages. Select add, type "ie-ee" (without the quotes) and click OK. Move "User Defined [ie-ee]" to the top of the list, then click OK to return to the main IE5 window. Next, click the Search button. You will see a search frame open up on the left side of your browser window. Select customize to see "Mozilla" vs. IE. Clicking on the other options that appear in the search window yields different and interesting results.

IE 4.0 Easter Egg..
Under Windows 95, select Help/About Internet Explorer from IE4's main
menu. A dialog box will pop up. While holding down the Ctrl and Shift
keys, use your left mouse button to select the IE "e" logo and then
drag it all the way to the left over the globe. Next, while still
holding the keys down, move the logo to the right, going over the
Microsoft Internet Explorer 4.0 black text. An Unlock button will be
revealed. Click it, and the globe graphic should start to shake. Hold
down the Ctrl and Shift keys again and drag the IE4 logo over the
globe.

Windows 95 Easter Egg..
Create a new folder: Right-click on the desktop and name it (without
quote marks): "and now, the moment you've all been waiting for"
Rename it: "we proudly present for your viewing pleasure"
Rename it: "The Microsoft Windows 95 Product Team!"
Open the folder

Excel 97 Easter Egg..
On a new worksheet, press F5
Type X97:L97 and press the Enter key
Press Tab
Hold Ctrl-Shift and click on the Chart Wizard button
Use the mouse to fly; right button goes forward, left button puts you in reverse