If your research consists in having watched a tv show, I would offer that you might not be qualified to lecture me on the topic. Diane Larsen-Freeman has some books on language teaching methodology you might consider. Particularly I would recommend James Asher's book Learning Another Language Through Actions. Asher is a cognitive research psychologist and made some startling findings about one way to acquire language.

A good overview of the critical period hypothesis can be found here: http://en.wikipedia.org/wiki/Critical_period_hypothesis

Also, you might be interested in this abstract from Stephen Krashen (Krashen is one of the most respected voices in language acquisition research and theory): http://tinyurl.com/8ro4xh