superiormindMinecraft 1.5 - 1.5.2 Seed
This seed spawns you on a tiny grass island right next to a HUGE mushroom biome with tons of mooshrooms.
The seed is:
Seed Code: superiormind
X: 355 / Y: -320 / Z: 63
X: 519 / Y: -295 / Z: 92
This is the very large mushroom biome.