A study released by staffing firm Accountemps found that one of the most common mistakes made by candidates in job interviews was having little or no knowledge of the company, according to 47 percent of the senior executives surveyed. While IT recruiters and managers still peg a lack of preparation near the top of their lists of interview gaffes, they cited many others that turned interviewees from dream candidates to inevitable nightmare employees in a matter of moments. eWEEK rounded up <A HREF="http://www.eweek.com/article2/0,1895,2011140,00.asp?kc=EWNAVEMNL090106EOAD">some of the worst offenses.</A>