More facts

The first season began on September 24, 2007 with the episode "Pilot" and because of the Hollywood writers strike was reduced the number of chapters 22-17, the latter called "The Tangerine Factor."; the second season aired in the U.S. on September 22, 2008 with the episode "The Bad Fish Paradigm," the May 11, 2009 with episode 23 entitled "The Monopolar Expedition." The third season premiered on September 21, 2009 on CBS, with the episode entitled "The Electric Can Opener Fluctuation" and ended with episode 23 called "The Lunar Exitation."

In Spain they premiered in spanish on July 12, 2008 in Antena.Neox. In Latin America, the third season premiered on October 27 in WB Channel. In Costa Rica all-Spanish opened on 21 August 2009, which aired until episode 15 of the first season. Subsequently continued in Mexico on 11 January 2010 on Televisa Channel 5 entirely in Spanish from chapter 1 of the first season, "Pilot" until episode 23 and last of the second season "The Monopolar Expedition" and have continued broadcasts in a nonrandom order. The fourth season will begin on September 24, 2010.

The audience record is in Chapter 17 of the 3rd season "The Precious Fragmentation" which garnered a total of 16.32 million viewers with a share of 15%. In the segment of 18-49 years (the most coveted by advertisers) also broke records, reaching 6.0 million.