The online travel site bookit.com is offering a free* Blackberry or smart phone or music phone when you book your vacation at their site. That's a value of $349. But please note the asterisk. You have to enter into a 2-year calling plan agreement and pay the usual activation fees. Still, from what I can tell, the phone itself is free.
I like the fact that it's an instant rebate, no mail-in required. And it looks like bookit.com has a handy Q&A where they spell out all of the details of the offer - including the fact that iPhones are not part of the deal. The offer doesn't expire until 2010 or while supplies last.