Huffpo has a compilation of “Check please!” being used as an exit line in Hollywood movies. It then makes the completely unsubtantiated claim that it’s the most over-used exit line.
Tish tosh! I proffer my own two unsubstantiated claimants to that title:
The first is “I think that went well” after some plan has gone disastrously wrong.,
But the most over-used exit line in Hollywood films is, by a landslide: Not saying goodbye when hanging up the phone.