I started by freebasing on seasons 7 and 8 of Monk. It was great to finally get some closure on the whole Trudy (Monk's deceased wife) mystery. They did a great job on tying up any loose ends by the last episode. It will be fun revisiting the series again one of these days.
Turns out the batch of Columbo stories had two of my favorites and another ep I've always regarded highly. My favorite story will be in the final batch (I just love "Columbo: Undercover"), but this batch had the delightful (and sad) story written by Peter Falk: "It's All in the Game". This one had Faye Dunaway and Claudia Christian as the conspirators, with Dunaway making a play for Columbo and Columbo seeming to play the game. Only the second time where he lets someone off (Christian, not Dunaway). The other episode from the batch that's a favorite is "No Time to Die" which is remarkable for not actually having a murder in it. Instead, Columbo and his nephew have to race to clock to find out who kidnapped his nephew's brand new bride.
I'd also mentioned that I've been rereading my Campion novels. So now that I'm done with watching those other mystery series, I'm revisiting the Peter Davison series now. Watching Mystery Mile right now and I'm quite impressed with the translation from the novel to the TV version. (Currently rereading Police at the Funeral and I remember that story very well.)
Oh, and Moon over Soho, the sequel to Midnight Riot (both by Ben Aaronovitch) is now out in the US, so I've been reading that each night. Enjoying it much as I did the first book.