Alan presents another Specstacular to celebrate Channel 4's first broadcast of the Grand National. There's a heady mixture of celebrities including Jonathan Ross, Paddy McGuinness, Kimberley Walsh, Louis Walsh, James Nesbitt, Abbey Clancy, Rylan Clark, Miranda Hart and Alex Brooker for some horsey-themed studio games. Music is from national treasures Madness.There are also some special links from a day at the Cheltenham races with Alan and Russell Brand, including a chance encounter with Clare Balding, plus the biggest ever celebrity sweepstake involving not just the studio guests but a host of other famous faces.