That preview was AWESOME. Cannot wait to see more.
Although, small quibble. Do Oin, Gloin, Balin and Dwalin (and a couple of the others) look a little plastic in comparison to Thorin (he seemed a little thin too!) and Kili for anyone else? They look good, but seeing them compared like that seemed to highlight it. then again I watched it like three times in a row... Enough enough nit picking, the trailer was awesome.
Its a bit facepalm worthy to see people thinking this is a sequel to LOTR, asking why Gollum is back and so on.