The only successful editing job I've ever seen on a feature was on 'Airplane' (Called 'Flying High' over here, btw, as we don't have airplanes, we have aeroplanes. Though why they didn't think 'Aeroplane' would work as a title, I don't know...anyway, 'Flying High' did the trick.)
Where was I?...Oh yes... the credits...
Remember how there was this running gag through the film where Ted Striker screams up in his cab at the airport and as he runs into the airport to chase Elaine, a passenger gets in his cab? Ted runs back and sets the meter running then continues into the airport and eventually ends up on the plane flying it with Elaine and trying to land it. (You've got to...concentrate...concentrate...concentrate...Hello?...Hello?...Hello...) All through the movie, they keep cutting back to this guy in the cab looking at his watch and cutting to the meter which is in the hundreds and even thousands of dollars as the film progresses.
Anyway, right at the end of all the credits, just before the Paramount title, it cuts back to him and he says "Well, I'll give him another twenty minutes...but that's it!"
We got a print of it one time (they used to get subsequent runs as supports a lot in those days, kids 
) and someone had taken this section and put it between the end of the pictorial credits and the rolling credits. It worked really well as the music stopped between them too so it all flowed through quite naturally and everyone got to see this incredibly funny scene whereas before it was a great pity because everyone had left by the time it turned up. They did throw in some funny things in the credits to try and keep you there like...
Generally in charge of a lot of things .... Mike Finnell
Author of A Tale of Two Cities ............ Charles Dickens
Foreez.............. A Jolly Good Fellow
Worst Boy (following 'best boy'credit)..........Adolf Hitler
In case of tornado...............Southwest corner of basement
...and finally...
This motion picture is protected under the laws of the United States and other countries. Unauthorized duplication, distribution, or exhibition may result in civil liability or criminal prosecution. So there.
Anyway, it worked really well and whenever it came in after that, if the print already hadn't been changed, we'd make sure we did change it.
Anyone else have an experience like that?
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The Olympics are coming...RUN FOR YOUR LIVES!!! 
Regards
Steve Brown
) How long ago did you screen it, Stephen? -------------------------
Ted Striker: "I flew single engine planes during the war...but this plane has FOUR engines!! It's an entirely different kind of flying...altogether!"
All: "It's an entirely different kind of flying."
Flying High...aka 'Airplane'- 1980
I had probably watched Aeroplane 50 times before I noticed that final scene at the end. I've only seen it on video though.
"A Hospital, what is it?"
"It's a big building with patients, but that's not important right now."
I ran it in its original release in Australia. That was about 80, 81 I think. That was my first job as projectionist (started at the age of 14). Running Kalee 21's , carbons, 20 min reels...That was just so much fun.
Regrards
Steve Brown
"What are you still doing here? The movie's over! Go home!"
I always like to stay through all the credits, but I usually get outvoted by my wife who sees nothing useful about credits. Sometimes there are some really funny things thrown in that are worth staying for.
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Oscar Neundorfer
Chief Engineer
SMART Devices, Inc.
oscar@smartdev.com
Eating Raoul (1981 Paul Bartel) had funny titles too. One off hand is: A Sister Of The Producer------Wendy Bartel. THIS is why I read credits.
as for after-the-credits-but-before-the-rating scenes, theres the one in Scary Movie with Doofie and the Suck-O-Lux 
Also when Disney gives thanks to all their animation staff in the end credits of the animated features they usually throw a tounge-in-cheeker in there like with 'Hercules' they say "it's been a real slice..." and in Mulan they said "You bring honor to us all..."
Aaron
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John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
One of the best parts of the movie!
So when a print came in and that piece had been moved so successfully and the audience was still there to see it (which, I'm sure was the reason it was filmed in the first place) that made the patrons leave with an extra gag in their memory and for me, that made it worth doing again when we next ran a print of it.
I will also say that this is the _only_ film I have ever done this to and if it came out today...I probably wouldn't bother, but at that time in my life I thought the final benefit worth the effort.
No credits were lost...they were all still there...but the majority of patrons who had paid to see something funny got a little bit more.
...and if the Zucker brothers are planning a re-issue for its 20th anniversary this year...I hope they make this change themselves on the new prints.
"Angel Heart": The end credits are intercut with the elevator descending (to Hell?). when the final credit disappears, there is a final cut to the elevator, which stops. A few heartbeats follow in the soundtrack. I love that ending; it's absolutely perfect for the film.
And, of course, The Phantom Menace (bad film, great ending of end credits): Darth Vader's heavy breathing is heard after the TAP/THX notice.
Don't you just hate all those TV channels that cut end credits after the first few lines? (At least, we have quite a few that do that; I don't know about the US and Canada...)