I enjoyed the show and I will continue to listen if you continue the series.  I studied some C years ago, but since got diverted into Perl, JavaScript and Python.  Its nice to get close again to the silicon.  Many of the basics; data types and flow control etc.,  are common to all C-like languages.  My ears will pick up when you get into C specific topics like structs, memory allocation, pointers, etc.  These things I remember to be specific to C, and are what made the language exciting for me, at that time.