Job Interview Questions: Should I be charismatic in a job interview?

I've never had to do a job interview before. I'm a pretty charismatic lively guy, should I tone all that down and be all serious and business-y?

Job Interview Preparation: The Key To Getting The Job Offer!

Recommended Answer:
Don't try and make too many jokes, but be sincere and engaging. Make eye contact and use your charisma. Job interviews are a learning curve - you may have to do a couple before you get the tone right. It depends on the interviewer as well, of course.

Job Interview Preparation Tips From an Experienced Manager of Sales Job Interviews

• Well, first off, don't use words like business-y, just not professional, you can joke around on the job a little after you get the position and have settled in for a while if everyone is comfortable with that sort of thing, but for the interview, just keep it professional, dress professionally, stay calm and cool, charisma is always good, so is confidence, but you'll have to keep it professional!
  
  Good Luck, I wish you the best :)