Just a tidbit from my archives

The Questions Journalists Dare Not Utter
Letterman uttered. McClatchy:

...there were two much better, more revealing moments in the interview. The first came when Letterman was pressing McCain about his efforts to tie Barack Obama to Bill Ayers, the Chicago professor who founded the Vietnam-era Weather Underground group whose protests included bombings of government buildings. Letterman pressed home the obvious point that Obama was 8 years old when Ayers was engaged in anti-war activities.

Then Letterman noted that we all have associations in our lives that we can't really control, and the viewers thought, Well, here's where Letterman brings up the Keating 5. But Letterman had a better McCain association to recall:

Weren't you once at a fundraiser at G. Gordon Liddy's house? Letterman asked.

If McCain could have gone any paler, he would have. He stammered. Then, mercifully for McCain, a tragedy for television viewers, Letterman cut to a commercial.