If Amazon's recent foray into British period drama leaves you cold, its Prime Instant Video service now has something grittier on tap: The FX Network's Justified. Thanks to a new deal with Sony Pictures Television, you can download the western-style crime series for no additional cost if you're a subscriber on the $79 yearly service. It was up for grabs at $1.99 a pop on Instant Video before, where Amazon said it was one of its most popular buys, and now
