Nobody looks forward to them, but it's easier to deal with them if you understand the process, prepare properly and practice your grand performance. Yes, you will feel like an idiot while you practice, but it's worth it.
Some companies use a structured list of questions.
Other interviewers may bring up topics that you'll consider irrelevant. Some might make you feel like you're being investigated for committing violent crime, but every exchange and question in an interview is important. Most people hate these even more than individual interviews. This type of interview can be very stressful. In today's increasingly team-oriented world of work you are more and more likely to encounter group interviews to measure your ability to fit in and demonstrate your ability to work as a team member.