Dr Gonzalez — the Astrophysicist half of the Privileged Planet team — recently presented this lecture in which he surveys and briefly, simply explains several key fine tuning cases:
[youtube M39BKwtUAyA#!]
Again, useful food for thought. END
PS: For more on fine tuning, cf VJT’s recent post on a new form of the inference here, and an introductory one from some time ago, here. (Note, onward linked materials.)