Reddit has published a hardcover compendium of the editor's favorite AMAs from r/IAmA. The 400 page tome, Ask Me Anything, includes AMAs with Louis C.K., Chris Rock, Martha Stewart, the Waffle House Grill Masters, Spike Lee, Bill Gates, Bette Midler, and many more. The book contains original portraits by u/youngluck and introductions from the r/IAmA Mods. Of course, the AMAs are available for free online but this is a tangible object, limited edition, etc. $35.
"Ask Me Anything (A collection of Reddit's best from r/IAmA Volume 1)" (Amazon)