I have heard this out of peoples mouths. If you hear anything like this from a client or prospective client, stop and run very fast...
* I don't care about usability * I don't use the internet so I won't look at the site when it's done * I don't care about users * I expect 100,000 hits a second at launch * I want to be number one on Google for the keyword "Google" * I want my logo to rotate * I want the most flashy thing you've ever made, everything should move in and out * I only want my site to be in the Missouri section of the world-wide-web * I want you to build a facebook youtube social network myspace twitter for horses
...seriously...and that's all I can think of right now.
Wow, the client that said, "I don't care about usability and "I don't use the internet so I won't look at the site when it's done? Just called the office.