I would generally identify as an introvert, but am extroverted in certain situations. I completely agree that introverts can be charismatic. I have a friend who identifies as introverted and is quite shy, however, his ability to listen and take in situations allow him to deliver hilarious one liners with perfect timing. In a past job I held one boss I had was concerned my quiet nature would interfere with my ability to be successful at my job. Another boss, however, pointed out that I was effective with clients because I listened, was never pushy, and was personable. I think the charismatic introvert holds a lot of social power :)