Bikini Barbershop and Lizard Lick Towing. Shows that show people working in the same non-business location include Airport and Bondi Rescue. Shows that portray a set of people in the same line of work, occasionally competing with each other, include Deadliest Catch, Ice Road Truckers and Million Dollar Listing Los Angeles and its spinoffs. Financial transactions and appraisals One notable subset of shows about professional activities is those in which the professionals haggle and engage in financial transactions, often over unique or rare items whose value must first be appraised. Two such shows, both of which have led to multiple spinoff shows, are Pawn Stars (about pawn shops) and American Pickers. Other shows, while based around such financial transactions, also show elements of its main cast members' personal and professional lives; these shows include Hardcore Pawn and Comic Book Men. Such shows have some antecedent in the British series Antiques Roadshow, which began airing in 1979 and has since spawned numerous international versions, although that show includes only appraisals and does not include bargaining or other dramatic elements. "Structured reality" While for "documentary-style" shows it is implied that the events shown would still be taking place even if the cameras were not there, in other shows the events taking place are done overtly for the sake of the show. These shows differ from "reality competition" shows or "reality game shows" (see below) in that participants do not compete against one another. Special living environment Some documentary-style programs place cast members, who in most cases previously did not know each other, in staged living environments; The Real World was the originator of this format. In almost every other such type of programming, cast members are given specific challenges or obstacles to overcome. Road Rules, which first aired in 1995 as a spin-off of The Real World, created a show structure where the cast would travel to various countries performing challenges for prizes. Big Brother is probably the best-known program of this type in the world, with around 50 international versions having been produced. Other shows in this category, such as The 1900 House and Lads' Army, involve historical re-enactment, with cast members living and working as people of a specific time and place. 2001's Temptation Island achieved some notoriety by placing several couples on an island surrounded by single people in order to test the couples' commitment to each other. The