Hi Susan:
I believe all teachers have a personality that is unique to them. One key is if a teacher is honest and sincere in their delivery, and relates to students naturally, it would seem unusual for students to take those sentiments as boring. Maybe not dynamic. But a natural version of oneself is probably going to be receved better than an artficial version of someone else.
If instructors come prepared with true passion, enthusiasm, and excitement about the topic, students should receive that and more interesting and enjoyable. Also, interacting with students provides variety, and that always helps keep attention and focus.
Regards, Barry