Dead Mau5 Minecraft Beta 1.3 - Beta 1.7.3 Seed
Seed Code: Dead Mau5
Another nice Seed with floating/flying mountains and a lot of Waterfalls.
X: -164 / Y: 70 / Z: -19
There is instant Obsidian as well as a little bug that lets the water flow over the lava.
X: -155 / Y: 79 / Z: 16
Remove one block and BOOM - they will all fall down. Make sure you remove one while standing on top of them, otherwise you will get buried alive. For those who didnt know: Sand is a gravity Block.
X: -266 / Y: 82 / Z: 13
Some nice little Skeleton Dungeon with Moss Stone, 3 Saddles, 6 Iron, 3 Buckets and 3 Redstone.