That is really a great thing for us all. http://fewhacks.com/
I just based my landscape material on this. I just wish I could exactly figure out what is going on with normals, ao and displacement here.
That was extremely helpful! Thank you!
Check out a nice guide to retopologizing and baking complicated shapes from Daniel Evan Ries. The artist was working on a low poly bandana and he had a hard time dealing with tons of wrinkles, so came up with a cool method. Daniel used Maya and xNormal in this case.
The guide was originally published here.