"Well, that's what they all wanted to know at Cannes, too ... you know, you just had to have a relally good script. You know, it's hard. I mean, even the second Ghostbusters wasn't as much fun for me as the first one. It's hard to make a sequel, it's got to be really funny. And that first one was so darn funny. It's hard for me ..."
When Letterman followed up by asking if anyone was working on a script,
"Well, I think ... we'll try again. I think. You know, I always drag my feet on it ..."
Watch the clip below: