Hey, here's a glitch I used to really enjoy doing. Anyone done the "Blue Bowser" glitch in the original SMB for NES? It's relatively easy, all you have to do is slowly approach Bowser. Now Bowser moves back and forth. Only get close enough for him to just barely (sp?) get onto the screen. Don't even let him get half on. Ever time I did this, he would be blue, not green! When you finally walked close, he's green again. Interesting, huh?
Another one on SMB is the "I look little, but I'm actually big" glitch. Just touch Bowser and the Ax-brige key at the same time as Super Mario. The computer will think of you as small, but show you as big. When you get a Mushroom, you'll look small, but the computer reads you as super! Fire flowers still give Fire Power, but you look small. When you throw a fire ball, you look big for half a second. This is probably my favorite error in a game ever.
These have only worked for me on my original NES cartridge. It doesn't work in SMB DX or Mario All Stars.
Has anyone else done these?
(Man I typed too much...)