On May 6, 2006, the fourth and final season (format) of the program that now simply known as "Infinite Challenge" (무한도전), went on air. Special coverage of 2006 World Cup Germany was featured for the entire month of June 2006, along with some 'Ah-ha' specials (with Shinhwa, for example) at the beginning of each episode. However, on July 8, 2006, the program took its memorable first step as the first 'Real-Variety' television program in Korean television history, with the airing of a segment called 'Please, come early': The six members were asked to come to the recording session on time or experience some form of punishment (일찍 와주길 바래, a part of the 'Please, be...' series see below), combining elements of both Reality TV and Variety programming, including comic characters from each of the "Infinite Challenge" members, see 'hosts'). Thereafter, the program has created challenges with regard to anything related to real life (excluding some critical issues such as religions and sexual preferences), in outdoor studios, with little use of acting or heavily based plotting. Since December 2, 2006, the program has received the highest ratings of prime-time lineups for Saturday evening.