Got to love the great Christopher Lee as Count Dooku. One of the best castings in Star Wars and Dooku was another awesome character. Also ironic since Lee was good friends with Peter Cushing who played Grand Moff Tarkin in the original and kind of in Rogue One via CGI.
With this and Saurmon, Christopher Lee has his own signature late in his career, playing fallen characters who go from major villain in the second film to getting killed off immediately in the third.