I searched for a topic like this and didn't find one.
One of my favorite scenes in the first one is where they trap Slimer and Ray says, “That wasn't such a chore now was it?” And then Egon and Peter look at him as if to say, “It was a huge Chore, Ray.”
I know it'll sound weird to you but this is my favorite scene in Ghostbusters 2:
Mayor Lenny: What the hell's going on!? It's pandamonium out there!
Jack: Yes. I know we're working on it.
Mayor Lenny: Great! While you're working on it I'm going down in history as the mayor who let New York get sucked down into the 10th level of hell! Alright. We've got no choice. Call the Ghostbusters.
Jack: Wait! Now…I…I'm sure there's another way.
Mayor Lenny: Jack, I spent an hour last night in my bedroom talking to Fiorrello LaGuardia and he's been dead for 40 years. Now where are the Ghostbusters?
Jack: They're not available.
Mayor Lenny: What do you mean they're not available?
Jack: Well I had them committed to the psyciatric ward at Park View Hospital.
Mayor Lenny: You what?
Jack: They were threatening to go to the press! I was protecting your interersts!
Mayor Lenny: Oh yeah? Uh huh? Well you can stop protecting my interests! You have exactly 2 minutes to clear out. You're fired!
Jack: But the election! You're making a big mistake Mr. Mayor! Harry!
Mayor Lenny: Harry! Remove this man from the building. And get me the Ghostbusters!
Council member: Mr. Mayor! Mr. Mayor! Come take a look at this. Wow! What is that? You ever see anything like that?
Mayor Lenny (after seeing the sky turn dark): Somebody get me the Ghostbusters!