I saw this video today from Xisumavoid and had to share it with my fellow Minecraft fans!
It looks like the Terrain Control Mod delivers some stunning landscapes for your Minecraft worlds. I like that there's structures included as well, but not so many as to take away focus from the terrain itself. I'm a little worried about its mob spawning properties - the video shows dozens of the same animal all spawned in one place. Hopefully there's some config options to tone that down a bit. Everything else is absolutely stunning though!