Fruit Ninja for iPhone/iPod Touch $0 Normally $0.99
To celebrate the 2 year anniversary of Fruit Ninja they are giving away some free codes. Go to anniversary.fruitninja.com and click on "Download for free Click here to redeem" at the top right of the page.
I'm pretty sure it's the iPhone version and not the HD iPad version.
I'm not sure how many they are giving away or how long this will last.