Super Mario 64 DS Tips

Flood... in tall tall mountain
This is more of a glitch than a cheat.

Go to tall tall mountain as Yoshi and run around, after a little while eat the cloud that can blow you away.
When you finish that hop on the warp that takes you to the cannon the level should be flooded by invisible water

It worked for me but it might not work for you.

While you are in tall tall mountain go to the place where the monkey takes your hat and swim to the edge of the waterfall. Your character will be sup ended in mid air if you did it right.

These work in the mystery of the monkey cage and breathtaking view from the waterfall.