Lines that Die Hard

[Pak-Man]

I was a fan of,

"You couldn't drag me away!"

"Well, he's right about that!"

[Wiseblood]

"And that's how House M.D. was devised"

[Invisible NanoGhost]

Holly:  "I missed you"
riff:   "...but my aim has improved a lot"

Alan Rickman shows up.
riff:   "Hmm, an english actor in a hollywood action movie.  I have every confidence he's going to turn out to be a good guy"

terrorist: "I promise, I won't hurt you."
riff:      "... as much as these bullets will."

When Bruce is in the elevator shift, one of the terrorists is walking around some elevated walkways and stairways with railings:
riff:      "Meanwhile, on the set of 'Space Mutiny'"

Police on radio to other police:  "Lieutenant, begin your reconnoiter"
riff:      "...but I don't reckon we ought'r.  Thank you, thank you so much -- you're very kind!"

Policeman: "John, John, you still with us?"
Bruce:     "Yeah, but all things being equal I'd rather be in Philadelphia"
Riff:          "Sorry Bruce, they gave that to Tom Hanks"

Alan Rickman shoots and kills Harry Ellis character.  All the hostages start screaming.
riff:      "And the crowd goes wild!"

While Bruce is talking to the LA policeman, about how he's sorry about how he (bruce) has treated his wife.
Riff:      "I wish I had my pretty mind back" (reference to Girl in the Gold Boots)