Theoden: You're going to change the picture so soon?
Gandalf: Yes. I'm having a flashback...

For Holloween, Sauron dressed up as Carcharoth when he ate the simaril
or
Sauron: I feel pretty! Oh so pretty!
or
Sauron: Thank you for freeing me from that awful ring! You have destoryed the curse. I can now live as free loving spirit amongst the peoples of Middle Earth
Isildur: Really?
Sauron: *turns back into Dark form* Naw, I'm just messin with ya
or
Sauron: I knew I shouldn't of tried that 'Aiya earendil Elenion Ancalima' stuff