Maybe you've heard about the SNL skit about Gov. Paterson of New York State. If not, it's at YouTube.
Making fun of a politician who stole from his constituents: funny. Making fun of a Senator who is ignorant of facts: funny. Making fun of a blind man: not funny. Seriously, I know that Saturday Night Live sucks now, but does it need to scrap the bottom of the barrel on this? Make fun of Patterson's policies, don't make fun of an affliction he can't help.