You also get a rebate for a movie ticket to the sequel. However I', not sure how the rebate works? It doesn't look like you get a movie cash coupon like LOTR. Do you see the movie and send in the rebate? It looked like the rebate had to mailed in before then.
Unfortunately, you have to mail in something to get the movie ticket. I did it last week, but the form says it'll take 4-6 weeks. I don't think I can wait that long, so I'll probably just go and watch the Matrix 2 and use the ticket to watch something else.