Watched this BBC series a few months ago, and thought it was really clever and immensely entertaining. It was co-created by Steven Moffat, whom Dr Who fans will know as a writer of the Dr Who series. It took me a while to realise that Dr John Watson in the series is Arthur Dent from the Hitchhiker's Guide to the Galaxy!
The series 1 blu-ray is £6.95 at both TheHut and Zavvi, but since there's 10% off today as Scotty posted, it's a bit cheaper from TheHut. Shipping is £0.99.
Series 2 blu-ray is also available at £11.65 after getting 10% off
http://www.thehut.com/blu-ray/sherlock-series-2/10567104.htm…
Series 1 is also available on DVD for £4.46 (after 10% off)
http://www.thehut.com/dvd/sherlock-series-1/10217198.html?na…
Edit: The series has won quite a few awards. See http://en.wikipedia.org/wiki/List_of_awards_and_nominations_…
Brilliant series. Great deal, too. Thanks OP!