rush limbaugh is following sandra fluke. well, he's following her tweets, anyway. and something she tweeted today became the starting point of another vicious limbaugh attack against the georgetown law student. sandra fluke will join me in an exclusive interview in her first response to limbaugh's attack against her. and in the rewrite tonight, our friends at funny or die have a sort of exit interview kind of a thing in mind for rick santorum, as he terminates his presidential campaign. they would like him to look at a sonogram of his campaign before he makes that final termination. that's next. ♪ hey, dad, you think i could drive? i'll tell you what -- when we stop to fill it up. ♪