Hero Hooks is a new PDF compilation by the Atomic Think Tank community over at MutantsandMasterminds.com. The PDF is full of plot hooks for superhero games, divided into chapters for people, places, and things. There's also the "Mega-Matrix" random plot generator. You can get it from the "Mutants & Masterminds Adventures" section of the M&M web site.

While you're there you can also snag Bad Medicine, an adventure from the new Iron Age source book, and The Fight for Freedom City, an adventure in which heroes must deal with a new threat from the Crime League.