Okay, I'm home now... so I searched up google for the foam 3D backgrounds...
Foam backgrounds (AquaTerra): AquaTerra Naturalistic 3d Backgrounds, Gallery
The ones from the UK are much better, and they have live rock 3d backgrounds too! AquaTerra Naturalistic 3d Backgrounds, Gallery
There was another UK site that had some really nice ones, can't find it now though.
On a side note, about the regular "planted" and "scene" background papers out there... although I've had some for 6+ years on my 90g, I don't think I will ever find one that makes sense to me. The background should add depth to the aquarium it's a background... so why are they all zoomed in and blown up so the pebbles in the background are the size of pennies, and the plants are larger than the foreground plants. Why can't one of those designers figure out if it's a background, make an aquascape with depth that continues from the average size of objects contained in an aquarium.