In this eighth episode of “Elton Jim” Turano’s “CAPTAIN POD-TASTIC,” Jim Turano talks with author Jennifer Keishin Armstrong about her new book, “Seinfeldia.”  The two discuss how “Seinfeld” grew out of simple conversation between comedians and friends, Jerry Seinfeld and Larry David, how the series has changed TV comedies forever, some behind-the-scenes insights as to how the shows were written, and all the pop culture gems this show has ingrained into everyday life.  “Seinfeld” fans and TV fans in general, will be informed and entertained by this hour-long interview..