For me, The Wonder Years are a reminder to my childhood. Apart from that it's funny and educative.
It shows how the people tried to stop wars, while others were more happy than ever that the wars were happening. It's the time when young people are starting to live together without having to be married.
The pilot episode shows you Kevin Arnold, a regular suburban boy, who gets into puberty and can't help it but getting crazy about girls.
The pilot episode is the key episode to the 8 seasons that follow, because it explains already a lot about the situation of Kevin and his Family.