Sports fans who are members of Amazon.com's Prime service might be happy to hear that the streaming video service has bolstered its video library with a nice collection of sports documentaries, thanks to a deal with ESPN. Amazon said it has expanded an agreement with ESPN, to add popular titles from its ESPN 30 for 30 film series to Prime Instant Video. The exact number of titles involved were not announced by Amazon, but the company said the series and films titles include 'The U,' 'Pony Excess' and 'Winning Time.' Prime Instant Video is the online movie and television streaming service which Amazon offers to members of its Amazon Prime service, which also combines free, two-day shipping on items from the service. Amazon says it now includes more than 22,000 movies and TV episodes on its Prime Instant Video service.