Here's a list of things to not say at a job interview:
When asked about your first company: "I purposely ran it into the ground."
When arriving: "I was going to wear jeans, but I decided at the last minute to get dressed up."
When asked about working with others: "I don't like foreign programmers because I can't understand them and I end up doing all the work myself."
When asked why you have yet to complete your bachelor's: "School is too easy."
When asked why you chose development as a career path: "Development?"
When asked about teamwork: "I hate working with engineers."
When asked about learning experiences: "Everything I need to know is on the web."
When asked what types of tasks you wouldn't like doing: "I don't want to do bullshit work."
When asked about his lead skills: "The people I've worked with were technical in their own ghetto mind."
When asked to solve a programming type of problem: "I don't know what an algorithm is, but my friend has used them before."
When asked why you want to work for the interviewer's company: "You called me!"
When asked what hobbies or interests you have: "My family is very important. My mother died recently..."
When the floor opens up for you to ask questions: "I don't really know... what position am I interviewing for?"
Also, don't submit code as a sample of your work that you copied from a newsgroup.