This seed may look like a regular seed... but to the left of the spawning point, there is a large variety of mushroom biomes -biomes with the mushroom cow (a.k.a. mooshroom) and giant mushrooms. These biomes are very rare. I never found the mushroom biomes with mooshrooms and natural giant mushrooms until this seed. Please comment if you either like this seed or found mushroom biomes before.

(I found it here: www.minecraftseeds.info/2012/01/infq.html)