YoshiCookie
Goomba
It became a big thing in Super Mario World, then Super Mario RPG, then Super Mario 64 all the way to Mario Power Tennis (some people did it for their trophy cutscene). I know Miyamoto said that he'd be doing away with it starting with Luigi's Mansion, but it turned up in the same game (Luigi collecting a key). Even in remakes and sequels this has been worked around (in Super Mario 64 DS, Mario's former V sign when collecting a star just became a fist-in-the-air, and in Luigi's Mansion: Dark Moon, he juggles the key instead of holding it out and doing the V sign). What do you think, guys?