It's really been a couple of weeks for hidden easter eggs in games. First we've got Borderlands 2, which managed to hide something in what feels like every single room, and now there's Torchlight II.
The third act of Torchlight II is so big that I have a feeling people are just scratching the surface of what's hidden there. But surely this is one of the best secrets—watch here as YouTuber iobuffa discovers a wonderful Minecraft easter egg, and reacts appropriately.
[Torchlight 2] The Secret Minecraft Easter Egg - World's First!? [iobuffa on YouTube]