There is the ages old question posed by the 'older generations,' which is, who is the better Bond, Sean Connery or Roger Moore? (Of course the younger folk get to add the new ones, Brosnan, Craig and Dalton.) I also realize that there were actually a few others like David Niven, but his wasn't a "real" Bond, more a spoof, IIRC.
My personal favorite Bond, and movie, of all time, however, is George Lazenby in the original "On Her Majesty's Secret Service". I watched it again (twice) today.
Why wasn't Lazenby ever asked to play Bond in a sequel? Did it have to do with negative reaction by fans to his marriage and the following death of his wife?