There's a little website out there called TV Tropes. The name is a bit misleading. Though it originally started out as a TV site, it has grown to encompass pop culture in general.
The site is, quite simply, a seemingly-endless catalog of "tropes" ("devices and conventions that a writer can reasonably rely on as being present in the audience members' minds and expectations") for fiction writers to use/misuse/overuse as they see fit. Each entry includes scores of examples from popular culture, as well.
I can't stress this enough: TV Tropes will ruin your life, and it doesn't matter what page you start at. You'll travel far and wide, with stops at pages like Hot Librarian, God Mode Sue, and Accidental Nightmare Fuel.
Don't say I didn't warn you.