Jason,

Here's a bunch of Local business review type concepts...

Good business models to Study and Many more in Google...

As with any business... Hundreds more will Come and Go...

Research “says”... The Missing & Untapped opportunity in this Niche concept is Doing it with a Local Video review “twist” Focused on particular Specialty businesses...

In Fact, there are all kinds of Local video stuff just waiting to Happen!

http://www.kudzu.com/
http://www.yelp.com/
www.menuism.com
http://www.judysbook.com/
http://www.cityvoter.com/
http://www.americantowns.com/
http://sfsurvey.com/
http://www.insiderpages.com/
http://trustedplaces.com/
http://www.welovelocal.com/
http://referrals.respond.com/
http://www.raveaboutit.com.au/
http://www.uratelocal.com/
http://www.openlist.com/
http://www.merchantcircle.com/corporate/about.html

Writing Good Local Business Reviews
http://www.mojopages.com/blog/?p=88
http://www.mojopages.com

Although...
http://www.paidcontent.org/entry/419...own-all-sites/

The Good, The Bad, & The Incredible Usefulness Of User-Generated Content...
http://searchengineland.com/070820-071552.php

Phil