What is the best way to discover good iPhone apps? So I can browse the App store myself, and read ratings and reviews, but with the 100,000+ iPhone apps out there, are there better ways to do this?

Word of mouth? App review sites? Cool app-of-the-day? Any worthwhile "App-finder" apps? 

Its hard to tell the difference between objective app-review/rating sites and the millions of other ad-filled spamsites out there.

So how do you find out about worthwhile apps? 

(Edited to make community wiki)
"app.itize.us is a painstakingly curated presentation of the best produced and designed iPhone and iPad applications available for download via the App Store."

App Shopper is a wonderfully designed app cataloging/tracking site - check their TOP apps section.