The one that started it all!
Easter egg locations time!
1.) This is a easy one. Just click the odd man out in the scene selection screen. You literally can't miss it.
2.) When Sonic shows himself for the first time, click on Tails.
3.) On the next scene, click the radio.
4.) As Tails finishes explaining, click on the GBA.
5.) On the game selection screen, click on "game".
6.) On the Mario pak, when Sonic gets mischievous, click the lone brick block between two '?' blocks.
7.) On the Sonic pak, when Sonic finally touches himself (ew lol) and shit goes weird, click on Mario.
8.) Not really a clickable easter egg, but Strong Bad wishes you a good farewell at the end of each pak.