interesting essay on 'Scientific Realism' from Stanford Encyclopedia of Philosophy here now at World Univ & Sch's 'Science' subject -
Here's the link itself - http://plato.stanford.edu/entries/scientific-realism/
Check out the 'Consciousness' subject at WUaS, as well, for a question interesting to scientific realism.
How does consciousness work?
Tom Nagel expressed one fascinating aspect of this expression in his paper "What is it like to be a bat?"
also here in the Consciousness subject which you can access here:
(http://scott-macleod.blogspot.com/2011/05/chiloe-chile-scientific-realism.html - May 28, 2011)