In June/July 2011 issue of Reader's Digest you will find an amusing column from careerbuilder.com Don't Call Us, We'll Call You (p.105) that lists some examples of wrong impressions people have made at their job interviews. So, if you do want to get a job you might want to stay away from the following:
"Applicant hugged hiring manager at the end of the interview."
"Applicant ate all the candy from the candy bowl while trying to answer questions."
"Applicant wore a hat that said, 'Take this job and shove it'."
"Applicant talked about how an affair cost him a previous job."
"Applicant threw his beer can in the outside trash can before coming into the reception area."
"Applicant's friend came in and asked, 'How much longer?'."