Ed Beringer was the book store owner seen at the beginning of the Season 6 episode Ignorance is Bliss. He is portrayed by actor Larry Cedar.
Beringer recognizes physicist James Sidas from his photograph on a dust cover and asks him to autograph a copy of the book.
| Season 6 | |||||
| #01 | "Broken" | #08 | "Ignorance is Bliss" | #15 | "Black Hole" |
| #02 | "Epic Fail" | #09 | "Wilson" | #16 | "Lockdown" |
| #03 | "The Tyrant" | #10 | "The Down Low" | #17 | "Knight Fall" |
| #04 | "Instant Karma" | #11 | "Remorse" | #18 | "Open and Shut" |
| #05 | "Brave Heart" | #12 | "Moving the Chains" | #19 | "The Choice" |
| #06 | "Known Unknowns" | #13 | "5 to 9" | #20 | "Baggage" |
| #07 | "Teamwork" | #14 | "Private Lives" | #21 | "Help Me" |