Catch the Wave (Function) Cromulent recently started a podcast, the Necessary and Sufficient Podcast (which can be found on iTunes as well by searching for "Necessary and Sufficient")--in it, he has a discussion with a person each week on the differences and similarities between two related words or concepts. He's discussed the differences between wet and dry measuring cups, the differences between "Jewish" and "Goyish," and he and I last week discussed Geek vs. Nerd, among other topics.
It's an engaging podcast; the conversations are interesting and Cromulent knows how to move things along and take the conversation down interesting tangents.
I wouldn't have said I was obsessed with it or anything, except last night, I dreamed that Schroedinger's Cat and I were being interviewed for the podcast. The two words being discussed were "Life" and "Death."
I woke up before the Cat could be pinned down to either of the two options.