This PS event is no longer available. However, they still have Lunch with an Imagineer. It is held at a special room in the Brown Derby for either lunch or dinner.
Here's the info I have on my site. It's not been updated in awhile so it might be slighted different in prices or availability now. I do believe you get a special plate per group signed by the Imagineer hosting the meal:
Lasts approximately 1.5 to 2 Hours
Have Lunch or Dinner in the Bamboo Room
of The Hollywood Brown Derby
at the Disney-MGM Studios
Hosted by a Disney Imagineer
Cost for Lunch is $60.99 for Adults & $34.99 for Kids (Aged 3 to 11)
Cost for Dinner is $99.99 for Adults (includes 4 wine pairings)
Tax and Gratuity Included