"Rely on the most trusted guide to restaurants and access over 40,000 Zagat Ratings & Reviews on your iPhone or Wi-Fi connected iPod Touch. Nightlife, Hotels, and Shopping are also included."
I don't have this app, since they don't have Portland listed as one of the cities, but I have used their books in the past when traveling so I can see the appeal of having that information handy on your iPhone or iPod Touch. It is available now in the iTunes store for $9.99 USD, and if you aren't sure you need it, have a look at this review.
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iPhone 4, 1.6 GHz Core 2 Duo MacBook Air, Apple TV, 2.66GHz Intel C2D Mac Mini, 1TB TC, Airport Extreme,several iPods and an iPad, 32GB Wi-Fi version.
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