The 3D content on Virgin is a side by side picture, same as Sky, and the BBC 3D HD trials. Some free features available, and a number of purchasable movies in the On Demand. Nothing much in the way of sport though.
Recently people have complained that they have difficulty running it on some Samsung 3D TVs. Apparently this is being fixed. Unbelieveably some customers were apparently thinking that you did not need a 3D TV to view the programmes in 3D