If you're the kind of person who keeps up with news about people spending truly massive amounts of money on comic books, then you're probably aware that there was a copy of Action Comics #1 rated at 9.0 that sold for $3,000,000 earlier this year. On one level, that makes sense. It is, after all, an incredibly important historical artifact, featuring the first appearance of Superman and Lois Lane in a story that kickstarted the entire superhero genre. On the other hand, if you really want to read that comic, you don't need to spend three mil. You can get it for like fifteen bucks.
Either way, the CGC corporation put the entire issue online to read for free -- presumably to prove that these crisp, unblemished pages really are as good as they say they are -- and there's a lot more in there than just Superman, whose first appearance has naturally overshadowed the numerous other short features contained in this most coveted comic.