Everything I've heard indicated "Working For Peanuts" was the sole stereoscopic cartoon before "Meet the Robinsons", but if there
is another one playing, I would be very interested in finding out the title.
One 3-D extra that apparently isn't making it to all Real-D presentations is the 3-D trailer for "U2-3D" coming in late 2007. It was refreshing to see live action footage shown in Real-D, vs the normal CGI fare. Being a U2 fan helps as well.

The preview looks like it's well thought out from a stereoscopic standpoint, with wide shots being in hyper-stereo to always maintain a dynamic 3-D presence.
Steve brings up good points about the possibilities that could be done with the Real-D system, if it is done properly. Almost a month ago I saw "3-D Mania" (aka: Encounters in the 3rd Dimension) and Haunted Castle in the Real-D format. While the substandard presentation at the Carmike Cinemas left a sour taste in my mouth (see previous post), just the fact that iWerks 3-D features were available as a package made me consider the untapped potential of Digital 3-D projection. Warner Brothers and Universal could offer Halloween 3-D packages to theater chains, easily available to them via encrypted downloads. Imagine being able to see House of Wax or Creature from the Black Lagoon sourced from pristine prints in 1080p polarized digital 3-D. Now
that would be some Halloween fun worth paying for.