Remember Joan Collins and Oliver Tobias in The Stud ? Crete related - I met him in Kalami a couple of years ago. A real life charmer.
Alas, I digress (but you lot started the Joan Collins talk).
Back to Papandreau - he just lacks the charisma of his late father and it's very unlikely that he wll ever follow in his footsteps (unless he dumps his wife to marry a stewardess 25years his junior)
Evangelos Venizelos (Pasok - ex culture minister)) is not related to the great statesman Eleftherios Venizelos, so no dynasty there. In fact Wikipedia states that he changed his name by deed poll from Tourkoglou!