No way do I disagree... the posted result is horrible (ten pages, many of them utility pages, from the same domain)... only it's not what I'm seeing, searching either for...
or... [s*uth beach diet]
(I've used an asterisk in the posted queries instead of an "o" to avoid unnecessarily skewing results.)
Either way, in the serps that I see, I'm only seeing s*uthbeachdiet.com returned once on the first page. Sorry, no time for a screen capture at the moment. I hope others will confirm.
I've noted several times here that this has got to be testing on Google's part, and, somewhere in the forum, tedster has posted that he's not always seeing the same brand authority serps for some queries that others are reporting.
To expand just slightly on my thought that this is a test... in the past Google has been offering up Sitelinks and multiple results to provide more exposure for results. I'm guessing that to leave no stone unturned, Google has been showing these multiple results for domains as yet another variant on Sitelinks.
I should note that I'm searching from the SF Bay Area, and that if I reset my location to Austin, TX, I cannot duplicate Brett's results. That said, Brett posted his results on July 13, and it's now July 15.
It's also likely that Google may let the data rule, and that if showing ten results from the same site provides more user satisfaction, they may well go with that. In the SERP Brett posted, there's no way I can image Google users liking those results.