I well remember Manera's ranting style from my very first circuit assembly when I was six years old. I thought it was so cool because it was not like the more subdued talks the local elders gave. However, when I got older I thought he just sounded like a crazy old televangelist.
other co's I remember:
Ron Coldiron
Bellezza (had a horrible toupee)
Gordon Gunther...very very very boring and I always thought he was mean, but I was very young
Dave Steele...nice guy
Dick Jones..an oddly appropriate name (although most everyone else liked him)
Douglas Mercier..easily my favorite co. I liked him and his wife very much. They actually made me want to be a witness.
Matthew Wilson.. a terribly nice guy, he came to hear my first public talk and gave me a house warming gift when I got my first apartment. I think he liked me pretty well even though he knew I was struggling with a lot of issues. He also recommended that I appeal the decision of my judical committee when I was removed as a ministerial servant. He has left the circuit work but I assume is still an active witness.
Craig Smith was my last CO. He seemed really nice, but by then I was really not involved in cong activities. I just remember that he was really blunt about the divisions that existed in the congregation.
I also remember a very kind older DO named Don Emshoff. I only met him once, but I really like him.