I watched all 20 seasons of Gunsmoke a couple years back as it was airing 6 days per week on MeTV and when they started over, I started watching again about half way through the series watching about 10 seasons again to the end. I use an antenna and computer based DVR to record MeTV broadcasts.
watched the original Twin Peaks series on DVD as well - hadn't seen it before.
I watched some episodes of Crime (Peacock) and Kolchak (MeTV), but I didn't really like them. I had watched Crime Story some way back in 1986 and liked it at the time, but Kolchak was new to me.
Recently watched the mini-series Battlestar Galactica on Peacock.
Now, I am watching House some evenings on Peacock, but I have already seen many of those episodes before.
I watch one episode of Star Trek TOS per week as aired on MeTV.