Okay! I think I have an answer for you. I found this:

http://webcache.googleusercontent.com/search?q=cache:WdHknYu...

This is an HTML page on a WordPress site. A hacked WordPress site. It's SEO spam and is rather successful. It's not a proper page and so has no title, but has all the keywords for a search and a bunch of links at the bottom that it's trying to rank higher for whatever search.

This isn't Google's fault necessarily but rather there are compromised WordPress sites out there that look fine to the owner, but when the referrer is Google, or the user-agent is the google bot, the website produces different results than if a human is viewing it.