Joe Morgan was arguably the best second baseman in baseball history. The only other person who comes to mind is Rogers Hornsby, who played 100 years ago. Range in the field, power at the plate, smart and tough.
I don't really like broadcasters - I mostly tune them out. There are a handful that I've appreciated over the years - Cosell and Madden come to mind, Al Michaels is ok. My personal favorite baseball broadcast analyst was Joe Morgan, a real student of the game. I've heard people complain about him, I guess they can have the Joe Bucks of the world.