Kiss Tester is one of the most innovative apps on the iPhone. Coming out of Cydia, this free app measures your kissing capabilities and accordingly rates you. Though I can’t imagine myself kissing and licking the iPhone screen, this is a TP app. And hey, don’t be disheartened with what this app says, at the end of the day the real thing matters ;).
Search ‘Kiss Tester’ on Cydia. Comes via the BigBoss / Planet iPhones source / repository