I'm sure you might have heard this before, but Daniel Craig also spent a day on set dressed as a Stormtrooper. It wouldn't surprise me if a few other well known actors also had small parts.
I saw it yesterday in IMAX 3D and was blown away by how it looks, would really recommend seeing it in that format if you can. I enjoyed more so then the prequels, but felt characters like Poe and Captain Phasma were really underused, here's hoping that they will get more screen time in Episode 8 (If Phasma made it out of the trash compactor!). I think we all knew that Han would be killed off as it was originally said that Ford had only signed up for 1 movie, I thought he might have gone out being a hero and saving someone or something like that. Also it was never really explained why they were looking for Luke in the first place. But didn't Hamill look like Oliver Reed in Gladiator at the end!
Spare a thought for people queuing for the next showing after me, when we came out some guy shouted out at the top of his voice 'Han dies'! The look on some of the people's faces was devastating.