Sky TV is offering a deal where customers can sign up for the Sky+ HD package to receive a £75 M&S gift voucher, free installation, and a free Sky+ HD box. The package includes over 50 HD channels and a free Sky 3D channel. Customers must sign up by December 17th to receive installation before Christmas. The deal also provides many popular movies to watch over the holiday season, such as Alice in Wonderland, Avatar, and various Harry Potter films.