No, I think the opening sequence is probably the best, though I do love the shootout at the hearing, and the fight with Patrice. It's definitely a set piece - CR had the luxury of having the Madagascar chase, the airport trouble and the falling house in Venice; Quantum of Solace had the car chase, the foot chase, the boat chase, Tosca, the plane chase and the shootout at Perla De Las Dunas. The pre titles sequence in Skyfall felt like the only sequence comparable to those (though the finale matches that of Perla de las Dunas).
But is it entirely original? I thought the motorbike on the rooftops in Saigon was much more exciting and Bondian, and the foot chase in Siena was much more picturesque. I still enjoyed it, though.