Over the summer we took a look at the Top 15 Bestselling Drugs of 2008. Now we're turning our attention to the biotech industry's blockbusters. As traditional pharmaceuticals face an increasing threat from generics, many drug developers are turning their focus to biologics, which are much more resistant to pricing pressure. Here's a look at the current cream of the crop--the top 10 blockbuster biologics. Slideshow ⇒