anti-pattern : there must be at least two key elements present to formally distinguish an actual anti-pattern from a simple bad habit, bad practice, or bad idea:
Vote for the TDD anti-pattern that you have seen "in the wild" one time too many.
The blog post by James Carr and Related discussion on testdrivendevelopment yahoogroup
If you've found an 'unnamed' one.. post 'em too. One post per anti-pattern please to make the votes count for something.
My vested interest is to find the top-n subset so that I can discuss 'em in a lunchbox meet in the near future.
Second Class Citizens - test code isn't as well refactored as production code, containing a lot of duplicated code, making it hard to maintain tests.