In search for a definition, I cruised over to Dictionary.com and was momentarily shocked into actually looking at the web page with a unique takeover approach.  Dictionary.com had stripped off all of the elements from its page, leaving just a text box for searching.

Performing a search brings you back to a normal page, with traditional sidebars and additional information (and a Prius ad unit above the fold).

It was definitely an eye-grabbing approach, and one that works well because the website has a very focused purpose (words and language search) and users are going to the home page to conduct a pre-identified limited scope transaction (look up a word).

What do you think about it?  Where else could this campaign be successful?