Complex sentence: Notable moments of this season included Drew Barrymore hosting the show--the youngest person ever to host the show, at 7 years, 8 months and 29 days.
Split into simpler sentences: Notable moments of this season included Drew Barrymore hosting the show. Because of the show Barrymore became the youngest person ever to host the show, at 7 years, 8 months and 29 days.