making seams question

hello all
I was wundering if any one could tell me or direct me to a video about were would be the right places to make seams on a building or human body :yes::eek::yes:

http://www.blendercookie.com/2010/03/28/unwrapping-a-building-part-01/
http://www.blendercookie.com/2010/03/02/unwrapping-a-female-character/
http://www.blendercookie.com/2009/12/26/intro-to-uvssculpt-on-the-alien-character-part-2/

thnx for the links they will very helpful