'My name is ...', 'Let's do it!', 'Are you insane?!', 'Don't call me Prince!', are definitely memmorable lines from the series.
'Tick-tcok Tick-tock' was also said quite a few times.
I'd like to post here a line extracted from The Departure. It wasn't verbalized, it was more of a statement that marked me the instant I read it.
'Life is sacred. Even the life of an Enemy.'