I love Rickman in most things, but Hans Gruber is one of the coolest characters. His delivery is perfect -
"Now I have a machine gun. Ho. Ho. Ho."
"The benefits of a classical education..."
Holly: "After all your posturing, all your speeches, you're nothing but a common thief."
Hans: "I am an exceptional thief, Mrs. McClane. And since I'm moving up to kidnapping, you should be more polite!"
"Nice suit. John Phillips, London. I have two myself. Rumor has it Arafat buys his there."
Hans: The following people are to be released from their captors : In Northern Ireland, the seven members of the New Provo Front. In Canada, the five imprisoned leaders of Liberte de Quebec... In Sri Lanka, the nine members of the Asian Dawn movement...
John McClane: [listening on the radio] What the fuck?
Karl: [mouthing silently] Asian Dawn?
Hans: [covers the radio] I read about them in Time magazine.