a friend of mine (an eminent poet) writes as follows:

So, if YOU were interviewing Bill Moyers on a big stage in California, what would YOU ask him?

my reply:

well. i don't know. and it would seem uncharitable and old. but i was reading barry goldwater's autobiography. and he regarded moyers' work on lbj's '64 campaign as the acme of dirty politics: all innuendo and (according to barry) false implication, no facts whatever. they were making barry out to be an insane warmonger. meanwhile they were rolling up the gulf of tonkin incident as mcnamara issued endless lies. so: i'd ask him: does he regret anything he did in that campaign? does he think what he did (most famously, the "daisy" ad) was a turning point in american political discourse etc.?