Your Favorite Author Intrusion

"Author intrusion" is a phrase most often used for writings where the author puts his own, barely-disguised opinions like political infodumps where suddenly the narrator will pontificate about, oh,

• why a world where only the (ex-)soldiers can vote is THE CORRECT WAY TO RUN A SOCIETY-- kaff Heinlein kaff kaff -- or
  
• why there is NEVER SUCH A THING AS VALUE ADDED BY GROUP ACTIVITY-- kaff kaff Ayn Rand kaff.
  
• Why girls have cooties and should be avoided.
  

You know, important stuff.

STOP THE STORY THIS IS IMPORTANT STUFF!

So, what's your favorite author intrusion?