"Ooooh! That's a bingo!" SS-Colonel Hans Landa (Christoph Waltz) in Inglorious Basterds
"And I thought they smelled bad on the outside." - Han Solo in Star Wars
"10 points to Gryffindor!" - Dumbledore in Harry Potter
"I know what you're thinking, punk. You're thinking 'did he fire six shots or only five?' Now to tell you the truth I forgot myself in all this excitement." - Dirty Harry
"Your mother was a hamster and your father smelt of elderberries!" - MP and the Holy Grail
Superbad- "I am McLovin"
Anchorman- "I love lamp"
Borat- "I like to make sexy time"
Star Trek:
Warp Factor 5, Captain
She cannae take any more Captain
I don't know whether it makes it better or worse, but both of these have actually happened with me and my BF.
LOTR: "LIGHT THE BEACONS"
Her: "strangle me with the dead cat"
Apparently the second one from Her was "too far" 
You can do Alan Partridge's "Don't rub your fanny on me!" but only if you do it in his voice and your partner is familiar with that episode.
Despicable me - beeee doooooh beeee dooooh beeee doooooh
As Good As It Gets - "When I first saw you, I thought you were handsome. Then, of course, you spoke."
"I can't help it if I have a heavy flow and a wide-set vagina" - Mean Girls
"I am totally, butt-crazy in love with Josh!" - Clueless
Damn, this looks fun but cannot think of any!
Rorschach wrote:
You can do Alan Partridge's "Don't rub your fanny on me!" but only if you do it in his voice and your partner is familiar with that episode.
Hahaha- or League of Gentlemen's Papa Lazorou (again must come with voice and previous knowledge) -
"You're my wife now"
Or The Matrix - "Dodge this"
SR36 wrote:
"You're my wife now"
LMAO. That would work beautifully for a man to man or woman to man, particularly in a one-nighter/first-time sex scenario.
How about this one:
http://www.youtube.com/watch?v=MwHWbsvgQUE
The grinch- 'im leaking'
Shrek- 'that'll do donkey, that'll do.'
Little shop of horrors- 'feed me, feed me now'
Gladiator- 'at my signal, unleash hell'
Harry potter- 'swish and flick' dont know why buy it makes me giggle every time. There are probably so many more
The Hangover 2 - Stu - "In my bottom? Oh oh god!"
Get him to the greek - "Just keep stroking the furry wall!!"
There are countless Alan partridge quotes that could be used.
I'm going to try that the next time.
"Dan! Dan! Dan! Dan! Dan! Dan! Dan! Dan! etc"
See how far I get before she clobbers me. :p
How about something a little more old-school?
"Thundercats HO!"
Man, what an entertaining afternoon this has been ;-)
"Great shot kid that was one in a million!" - Han Solo