I suspect the producer decided to hire his uncle to narrate this otherwise good series. The graphics are superb! The music track seems perfect! The contributions of the guests are great, and the script is clear and very informative. THEN along come Erik Dellums - or Williams - and JUST RUINS the entire episode! This poor man grunts and stumbles along as if he has never seen a script IN HIS LIFE! He is THE WORST! I often just can't take him and tune out.