Personally, I preferred the fixed camera, Alone in the Dark style of earlier Resident Evil games. But RE4, originally on Gamecube, evolved the franchise to the modern over-the-shoulder mechanic. And incidentally, it's available in the App Store today for $US8.
While this port was previously released in Japan for other mobile phone platforms, the gameplay clip reveals a pretty fluid experience with notable graphics. We're just not so sure about those controls. Seriously, when are we going to get the bulky iPhone Gamecube controller adaptor that fans have been clamoring for? First no cut and paste, now this shit. Un freaking believable. [iTunes and appadvice via joystiq]