K, I was bored so I used the seed 'It's Friday, Friday, Gotta get down on Friday'. I looked around and I found a dungeon right on the surface. Also, there were tons of ferns and wolves.

Find really cool seeds and post them here with a description!

A few famous ones for the people who haven't looked at many lists yet are "gargamel" and "Glacier". Both have extreme mountains right by the spawn. "404" is also well known, but the epicness is not instantly apparent. Near the spawn, there is a gravel patch near a beach. Digging there opens a giant cave system to explore. Keep in mind that all seed names are case sensitive

mojang      is pretty epic.
Dividing by 0     has a lavafall, sets fire to nearby trees
0/0        has one big mountain and a cave with an epic entrance
0 divided by 0 has one floating island