It's the landing sequence on this that has me spooked. Not that I doubt the engineering behind it but wow, to put something this heavy on the planet they had to come up with a fairly complex sequence as the 7 Minutes of Terror video explains. I'm sure it's been checked and rechecked but I don't think I'd want to have to go through the stress of waiting for final confirmation.
If they pull this off then my extreme kudos to the team, and I very eagerly await a new set of eyes on MARS. I couldn't get enough of what came out of every previous rover. Maybe I missed my calling. :)