I always liked Farnk Crumit's 'Life Gets Tedious' - I think there was a version by Peter Lind Hayes too. I remember trying to perform Lonnie's 'Talking Guitar Blues' when I first took up the guitar and then Woody Guthrie's 'Talking Dustbowl' and trying to sound like Ramblin' Jack.....   I think the first talking blues I heard was Pete Seeger's 'Talking Union Blues'.
It's great to hear that people are still writing and performing them - I like the look of the Guy Clark one that Janie posted.
Graham