"Not much good for a political debate but certainly family entertainment", yeah go and tell him to the leader of the left who used those words.
As far as Alessandra Mussolini, yes, she's Mussolini's great grand-daughter and she leads a tiny party (0.6% according to more recent polls). It is on the far right side of the political spectrum and she says it has nothing to do with fascism. It is a "social right" party, as we call it. Actually closer to socialist ideas than any other party of the right.
Do not forget that Berlusconi can do without this 0.6 % of her votes, while Prodi (the left) could never think of winning without the 12-15 % of its two Communist parties in the coalition. So who's more extreme? Hehe.