If you know where to look in D-MGM, you can spot some Roger Rabbit stuff. Look at some of the windows above Hollywood and Vine (next to 50's prime time). If you look closely you can see where he shot through the window out of Maroon's office. If you go behind Keystone Clothiers (where the slushes are sold) walk towards 50's Prime Time and turn around. You'll spot a Maroon billboard with Jessica, Roger and Baby Herman. Look at some of the hand/footprints in the courtyard of The Great Movie Ride. Yup, Roger Rabbit is in there too. And, of course you can spot the tractor (forget what that thing is called at the moment) that runs Judge Doom over and reveals that he is a toon is in the Backlot Tour. And somewhere (can't remember where) the Toon Patrol (weasels) car is somewhere in the park. Oh, and look above you in that little shop by the outside eating area between LMA and Backlot. You'll spot a lot of stuff from the warehouse Judge Doom revealed his plans at the end of the movie.