PHILADELPHIA--(BUSINESS WIRE)--The top 20 TV series on Xfinity On Demand for the week of February 16 – February 22 were: Empire, FOX The Walking Dead, AMC Downton Abbey, PBS The Blacklist, NBC How to Get Away with Murder, ABC Better Call Saul, AMC The Big Bang Theory, CBS Scandal, ABC Modern Family, ABC Two and a Half Men (series finale), CBS Gotham, FOX The Flash, CW Vikings (season premiere), History Fresh Off the Boat, ABC Grey’s Anatomy, ABC The Bachelor Part 1, ABC Chicago Fire, NBC NCIS,