In the scene where you see Ganondorf with the flowers, and the animals,
there is a picture of Perfect Kirby in the background. If you click
this, a bomb shall fall down and "Kaboom!"
When ganondorf wakes up from his dream, click ganny and he squeaks!
Also the background picture behind Ganondorf's bed changes every time
you watch it.
At the end credits, there is Ganny again! Click him multiple times,
eventually a cute little secret movie appears with Link, Zelda, and lots
of chocolate! Hurray!
Take a look at this video of the
Song of Storms.