In the UK, Waterstones are offering a cool deal. Pre-order A Dance with Dragons by George R.R. Martin and get Mark Lawrence's well-received debut novel, Prince of Thorns, for free. The deal is running from now to presumably when ADWD hits the shelves (on July 12th).
An interesting promotion. Prince of Thorns is next up on the review pile after the second Hunger Games novel, so I'll let you all know what I make of it.