For tech, Kara Swisher's Recode Decode is excellent.

I've yet to find any good History podcasts that serves good to great episodes on a regular basis either. The BBC's history podcast stood out as vaguely better. But I was always left craving for something more in-depth, like some of the better History lectures you can find on YouTube. That being said, there are a few great shows from time to time, like Slate's Slow Burn (on Richard Nixon and Bill Clinton) and Standoff (on the Ruby Ridge incident) or MSNBC's Bag Man (on Spiro Agnew).