I'm currently job hunting, with a little bit of temping thrown in when times get tight.
I went to a group job interview a few weeks back (7 candidates, each question was asked and then we went around the table and each person answered in a different order each time).
The interviewer asked where we wanted to be in 5 years, and everyone started giving their answers... until we reached one candidate, who shrugged and said in a very unbothered voice "Dunno."
Cue needle scratch sound.
Everyone was staring at him in shock. That is one of the most common questions in a job interview. Even if you truly don't know, you lie! Or at least pretty up your answer more than "Dunno!"
The group interview was weird in another way - everyone is trying to sell themselves, of course, but it's weird to be in a room where almost everyone there is doing the exact same thing. Everyone sounded a bit hollow and artificial, and I'm sure I sounded the same to them.