In Empire Strikes Back - when Darth is at Cloud City and Solo, Leia and Chewie get tricked into captured there us something I have always wondered.
Han fires off a few shots to no effect and then Darth says something along the lines off "captain solo, please join us etc" and then Solo makes a remark to Lando and wanders into the room.
You can see the table is set for a meal and then Darth sits down. Are they actually planning on having a discussion and a bite to eat? How does Darth eat anyway?