Well, I think we can all agree: whether you like the "other fellow" line or not, it's a good thing they didn't try it EVERY time they introduced a new Bond.

Although...maybe "M" should have acknowledge the changing of the guard...
DIAMONDS ARE FOREVER: "Don't let the pay raise go to your head!"
LIVE AND LET DIE: "Let's hope you work out better than your predecessor!"
LIVING DAYLIGHTS:"Bond!You look so much YOUNGER! Get some work done?"
GOLDENEYE:"Finally got that promotion you wanted, eh?"
CASINO ROYALE: "The LAST time we sent an agent to Casino Royale, he REALLY made a dog's breakfast of it!"