TV Tropes has a D&D section.
tvtropes.org/pmwiki/pmwiki.php/Main.Dung...
!!! WARNING: Reading and clicking at TV Tropes is highly addictive !!!
Nearly every TV/Movie/Book trope can be attributed to D&D.
Here are some of my favorites:
Absurdly Sharp Blade
tvtropes.org/pmwiki/pmwiki.php/Main/Absu...
Badass Normal
tvtropes.org/pmwiki/pmwiki.php/Main/Bada...
Cool Gate
tvtropes.org/pmwiki/pmwiki.php/Main/Cool...
Talking Is A Free Action
tvtropes.org/pmwiki/pmwiki.php/Main/Talk...
They Changed It Now It Sucks
tvtropes.org/pmwiki/pmwiki.php/Main/They...
