Nintendo Wii Easter Egg - Homebrew Channel Bubble Breaker

You can pop the bubbles in Homebrew Channel's background.
This is how you do it:

1. Start the Homebrew Channel.
2. Once you get the list of applications, press 1+2 on your Wiimote.

This will clear the list away and you will see a Score counter in the lower right. Pop the bubbles in the background by pointing on them and pressing the A button.

This is a reference to an older method of connecting the Wiimote (by pressing 1+2).