I am well aware that these are not the only good quotes in the series. It just happens to be that these were the ones that popped into my head when i was writing the poll. And besides, longer quotes wouldn't fit in the space allowed. lol.
Personally, I think they're all great (inclusive of quotes not mentioned in the poll) but of the four above, i'd have to say my favourites are the first two. And if i had to narrow it down further, i'd pick "Don't you dare use the word 'Party' as a verb in this shop!" - it's just classic.