If you're interested in learning about the history of In-N-Out, check out this nearly hour-long discussion by Stacy Perman, the author of In-N-Out Burger: A Behind-the-Counter Look at the Fast-Food Chain That Breaks All the Rules. You can watch the full video at FORA.tv, where you'll also find links to different chapters of the video so you can jump around specific topics.
This video shot at Books Inc. in Mountainview, California, is from 2009, but we hadn't seen it before—it's never too late to learn more about In-N-Out. [via Brian G.]
The Ultimate In-N-Out Secret Menu (and Super Secret Menu!) Survival Guide
The In-N-Out Matrix (Every Item From the In-N-Out Secret Menu On a Single Page)
The Burger Lab: The Ins-n-Outs of an In-N-Out Double-Double, Animal-Style