Editing Ad libitum (section)

==Other performing arts==
"Ad-lib" is used to describe individual moments during live theatre when an actor speaks through their character using words not found in the play's text. When the entire performance is predicated on spontaneous creation, the process is called [[improvisational theatre]].

In [[film]], the term ''ad-lib'' usually refers to the interpolation of unscripted material in an otherwise scripted performance. For example, in interviews, [[Dustin Hoffman]] says he ''ad-libbed'' the now famous line, "I'm walking here! I'm walking here!" as "Ratso" Rizzo in ''[[Midnight Cowboy]]'' (1969). While filming at a streetcorner, the scene was interrupted by a taxi driver. Hoffman wanted to say, "We're filming a movie here!", but stayed in character, allowing the take to be used.<ref>{{cite web |url=http://xfinity.comcast.net/slideshow/entertainment-unscriptedmoviemoments/8/ |title=Greatest Unscripted Movie Moments |access-date=September 20, 2012 |last=Onda |first=David |publisher=[[Xfinity]] |url-status=dead |archive-url=https://web.archive.org/web/20120817130034/http://xfinity.comcast.net/slideshow/entertainment-unscriptedmoviemoments/7/ |archive-date=August 17, 2012 |df=mdy-all }}</ref>

Some actors are also known for their ability or tendency to ad-lib, such as [[Peter Falk]] of the television series ''[[Columbo (TV series)|Columbo]]''. When performing as Colombo, Falk would ad-lib such mannerisms as absent-mindedness, fumbling through his pockets, or asking for a pencil, all in a deliberate attempt to frustrate his co-stars in the scene and obtain a more genuine reaction.<ref name=JustOneMoreThing>{{cite book |last= Falk | first= Peter | date= August 24, 2007 | title= Just One More Thing |publisher= Da Capo Press | isbn= 978-0-7867-1939-6}}</ref>

Live performers such as [[television]] [[talk-show]] hosts sometimes deliver material that sounds ad-libbed but is actually scripted. They may employ ''ad-lib writers'' to prepare such material.<ref>{{cite news|url=https://news.google.com/newspapers?nid=1368&dat=19510715&id=XDIxAAAAIBAJ&sjid=GRAEAAAAIBAJ&pg=4449,1134316 |title=That's Earl, Brother |last=Wilson |first=Earl |date=15 July 1951 |work=[[Milwaukee Journal Sentinel|Milwaukee Sentinel]] |access-date=2015-06-12}}</ref> 

The [[HBO]] sitcom ''[[Curb Your Enthusiasm]]'' by [[Seinfeld]] co-creator [[Larry David]] primarily uses [[retroscripting]] and ad-lib instead of scripted dialogue.