Who in your poinion is an effective communicator? Why?

Effective communicator is a person who express the message well and also get the message right. My friend Jen, she always explain stuff to me when I am confused. My English ability is not as well as her, whenever she explains it to me she use simple words, so then I understand. Today in math, we were doing some logic thinking activity. I think my logic is not really good, and some of the things I don't really get it. Jen tried to explain it in a simple way which I understand. Mr. Truchon is also being a effective communicator in this case, he make some examples to show me the meaning, and then I got it. Effective communicators are awesome, I hope I am one too. :D