Yes there is a season 5 out now.
Season 5 Episode 7
The Big Bang Theory - 2007 The Recombination Hypothesis 5-13 was released on: Canada: 19 January 2012 USA: 19 January 2012 Finland: 8 April 2013 Hungary: 11 July 2013 Japan: 27 September 2013
Un-reality would be a scripted show. Fictional shows such as "The Big Bang Theory" and "Hawaii 5-0" are examples.
It varies a great deal. For example, "The Big Bang Theory" on CBS airs around 22 episodes per season. But "Falling Skies" on TNT airs only 10 episodes. --- On Network TV, typically Season 5 is when a show could be sold into syndication so there should be around 85 to 100 episodes for that to happen, but as the first answer says, it does indeed vary when you throw in cable.
The Big Bang Theory - 2007 The Skank Reflex Analysis 5-1 was released on: Canada: 22 September 2011 USA: 22 September 2011 Australia: 10 October 2011 Netherlands: 22 November 2011 Germany: 13 March 2012 Finland: 7 January 2013 Hungary: 25 June 2013 Japan: 16 August 2013
Season 5 episode 13 was aired in america on the 19/01/2012. This is the 100th episode of the big bang theory.
Season 5 Episode 7
On 22 September 2011.
The season 5 dvd came on 11th September 2012 .
September 24th 2012 xx
January 12th 2012
Season 5 premiered on September 22, 2011
The Big Bang Theory - 2007 The Desperation Emanation 4-5 is rated/received certificates of: Netherlands:AL
The Big Bang Theory - 2007 The Infestation Hypothesis 5-2 is rated/received certificates of: Netherlands:AL
The Big Bang Theory - 2007 The Rhinitis Revelation 5-6 is rated/received certificates of: Netherlands:AL
The Big Bang Theory - 2007 The Ornithophobia Diffusion 5-9 is rated/received certificates of: Netherlands:AL
The Big Bang Theory - 2007 The Isolation Permutation 5-8 is rated/received certificates of: Netherlands:AL