Blender compositing CG+photo

Basic tutorial on how to blend CG and background photo. The shadows are still too weak but you could enhance this by using the compositor. Another problem can be seen in the reflection: the floor shadows doesn't appear because I disabled the tracing in the floor shader so it doesn't render. Some best settings are to be found here...

>video

from this:

(This 2 pictures are taken from a Jeff Patton Mental Ray tutorial)

to this: