The only way to keep players from doing something stupid is to Just Keep Talking.
Sadly, there is no way to keep the DM from doing something stupid, although offing one of his favorite NPCs might shut him up for a couple of minutes.
A screencap comic that poked fun at videogames and the industry. The comic has ended, but there's plenty of archives for you to binge on.
DM of the Rings
Both a celebration and an evisceration of tabletop roleplaying games, by twisting the Lord of the Rings films into a D&D game.
This Game is Too Videogame-y
What's wrong with a game being "too videogameish"?
Why I Hated Resident Evil 4
Ever wonder how seemingly sane people can hate popular games? It can happen!
Artless in Alderaan
People were so worried about the boring gameplay of The Old Republic they overlooked just how boring and amateur the art is.