Politically Incorrect: This was back when it was on cable so they did general topics and taped several in one day. Also nice because they didn’t have to keep stopping for commercials.
NewsRadio: The episode with Janeane Garofalo as the guest star and when Phil Hartman was still with us (and actually before the show became a big hit, which was how I got a same-day ticket).
The Larry Sanders Show: The bits of his monologue were actually done in front of a live studio audience. Again, several episodes worth of material were done at once (with Shandling stepping out for a suit & tie change). They also filmed a “regular” shot with Norm McDonald talking to Larry and Hank during what would be a “commercial break” on the show.
I enjoyed all three, though it was funny with the NewsRadio bit because they were so professional, they’d just barrel through the episode, one scene after the next, usually only two takes per shot. The “entertainer” they provide to keep the audience animated was actually pretty funny (he claimed he was just a page). However, when they were shooting, I’d say at least 2/3 of the people were watching not the live action but the TVs hanging just above us–partially because the crews and cameras and such were in the way, but I suspect partially because we’ve just been conditioned to watching these shows that way in the first place. Also, Peter Bonerz (Dr. Jerry on The Bob Newhart Show) was the director of that episode!