My worst interveiw (or maybe best) lasted all of 5 minutes. I was scheduled to interview with 4 people, about an hour each. The first was supposed to be the HR manager, but she couldn't make it. So my first interview was with an engineer. The guy looked at me and explaied what his company did. After a few minutes looking at my resume he said "I don't think you want to work here?". I said judging by his explanation of what they did, no wouldn't be taking a job. So he said "OK, lets not waste each others time. Goodbye."