I don't know if people knew about this or not or if I only know this but oh well. So in the epilogue mission at the end of the game, the one in the airplane, at the beginning of this mission, two guys are talking. One guy says "Surely you can't be serious." Then the other guy says "I am serious, and don't call me Shirley."  This is from a conversation in the movie "Airplane!" This movie starred Leslie Nielson of the 'Naked Gun' series. On Yahoo!, they put news up about how he died last Sunday. Here's the link: 
 
http://movies.yahoo.com/news/movies.ap.org/leslie-nielsen-naked-gun-fame-dies-age-84-ap 
 

Wow?

I didn't know that. Then again I've not watched Airplane! :s

Are you under 15?  
 
Because that would be the only acceptable reason for that reference to be lost on you.

Yeah that was very obvious to most people actually.

I haven't seen Airplane and even I know this and have known since the game was released. I don't see what the big whoop is.

I won't insult you, because there are plenty of obvious things that I haven't noticed over the years, and if I remember that part of the game correctly, it's kind of hard to hear the dialog, and I think the first time I played it I missed it because I didn't even hear what he was saying (but noticed it the second time I played that level, because it was a pretty kick-ass level). 

" @awesomeusername: I think that raccoon looks pretty comfortable. That looks like the hole of comfort more than the hole of shame. "

Hey guys, did you know the Under Pressure was not written by My Chemical Romance but some band named Queen?

" @awesomeusername: You only just figured this out?   "

" @Hamz said:

" @awesomeusername: You only just figured this out?   "

Yeah, surely you can't be serious? (HAHAHAHA... ha... ):) "

I had no idea what that meant when I heard it, my god, it all makes sense right now.
 
And you all seem to overestimate the cultural influence of Airplane!

Yeah, dude. One of the most famous lines in the history of cinema.

Man, I really don't remember them making that reference in the epilogue. I should replay that game!