Finally, an accurate football book title! This book focuses on the overlap between the NFL and popular culture. It includes entries for mascots, TV announcers, cheerleaders, end-zone dances, football movies, superfans*, players-turned-actors, music videos ("The Super Bowl Shuffle"!), nicknames, and more.
I learned a lot of interesting stuff. I didn't know Alex Karras' wife on Webster was also his wife in real life. I had never heard about John Riggins' drunken encounter with Justice Sandra Day O'Connor. Like the subtitle says, this isn't critical information, but it's a lot of fun. Schnakenberg writes with humor appropriate to the entries and includes sidebars like "Great Moments in Cheerleaders Scandal".
* Incidentally, the "superfans" entry refers to actual hardcore fans (many of whom also get their own entries) and not "Bill Swerski's Superfans" from Saturday Night Live in the 1990s. I'm not a football expert, but I think that is the author's most egregious exclusion from this book.