Xbox One is also a great choice for dads on Father's Day because -- like the Playstation 4 -- it works as a gaming console, blueray player, and a full media center. In other words, it has a little something for everyone.
If dad is not really a console kind of guy, maybe a gaming laptop is in order. The Lenovo Y50 Touch 4K gives you amazing visuals and will run the latest games. Of course it also does all the things a laptop does so it can be used for work or play.