Mark, gotta ask a followup, are you saying there is nothing but splats in that shot?  No real 3d trees?  And you just used mutiple instances of the same splat using the replicator?

Because if so, that's awesome.  I always assumed that if you did a render of a tree and turned it into a splat that the shadows wouldn't look right since it's a 2d image instead of 3d.  But that scene looks great, I didn't see anything which would make me think the shadows looked wrong.