ms. lewinsky that was not appropriate.rong. >> reporter: every moment gripping the nation, including the impeachment hearings. >> the evidence suggests that the eight months included false statements under oath, false statements to the american people. >> reporter: earlier, those sexual harassment allegations against then supreme court nominee clarence thomas, which he denied. the drama playing out in real time. more than 20 million tuning in. >> he would turn the conversation to a discussion of sexual matters. his conversations were very vivid. >> this is a circus. it's a national disgrace. and from my standpoint, as a black american, as far as i'm concerned, it is a high-tech lynching for uppity blacks. >> reporter: and in the '80s, oliver north brought his feisty lawyer to answer questions about iran contra. >> let the witness object if he wishes to. >> sir, i'm not a potted plant. i'm here as the lawyer. that's my job. >> reporter: but maybe most famous of all, the investigation into watergate. >> i'm not a crook. >> r