My favourites...
'What we do in life echoes an eternity.' (Gladiator)
'If we bring a little joy into your humdrum lives, it makes us feel as though our hard work ain't been in vain for nothin'.' (Singin' In The Rain)
'You think you're big time. I'll show you big time.' (Scarface)
'I love the smell of napalm in the morning.' (Apocolypse Now)
'Surely you can't be serious.' 'I am serious, and stop calling me Shirley.' (Airplane)
'Fat man, you shoot a great game of pool.' (The Hustler)
'Infamy, infamy, they've all got it in for me.' (Carry On Cleo)
'It is possible that his intended victim was a man and that he made a mistake?' 'Mistake? In a nudist camp?' (Shot In The Dark)
'Let me tell you something my friend. Hope is a dangerous thing. Hope can drive a man insane.' (Shawshank Redemption)
'Let's assume, just for the moment, that you are a dishonest man.' 'Assume away.' (The Producers)