Everyone in the game talks, except Mario. Only says random Italian to people like Luigi, in Mario and Luigi _______ (GBA, DS)
There are more. Link is a mute, as well as Kirby, Tim (from Braid) and that character from cave story. And that's just from the top of my head.
-your princess girlfriend being abducted by a giant turtledragon pretty much every year doesn't cause you to lose your jolly good mood.
-when going to a concert, it's all about being as identical as the person next to you
(at least rock band tries to blur this a bit)
-portal guns are meant for science, not for breaking in a bank
-you open doors telepathically (except in horror games...there you'll do it in slow motion)
-cars don't break or malfunction until they're either upside down or driven into the water...in which case you better run because they'll explode.