I'm very surprised to see so much OTR mentioned here. Not sure why, exactly, I suppose it fits into the whole GA comics thing pretty neatly.
My wife tells me [and I agree] that I was born in the wrong decade. Seems all my interests lie in a much older pop culture era: GA Comics, Pulps, OTR, B Westerns, etc.
As for my recent listening, I've been playing a lot of Red Ryder, Roy Rogers, and Our Miss Brooks shows.
I'm a comics letterer by trade, so I tend to set up a playlist in the morning and go through it while I work on the pages. It's always a mixed bag: Richard Diamond, The Saint, Dragnet, Gunsmoke, Archie, Burns and Allen, Texas Rangers, Fred Allen, Jack Benny, Black Museum, Blondie, Bob Hope, Blue Beetle, Boston Blackie, Green Hornet, This is your FBI, etc....
My top two favorites, though, are Dragnet and Gunsmoke. Wonderful programs. Was kind of a surprise to find that William Conrad was Marshall Dillon at first, though. Listening to all that OTR it's clear that Will Conrad was a very busy man. His distinctive voice can be heard on dozens of shows over time...often playing a badman.