This is somewhat difficult issue. I first thought that graphics are poor when full potential of the hardware is not being used. But then again, think about pixel art. For some people it is pleasing to the eye, even though it's not using much different colors and the resolution is low. Maybe poor graphics are the ones that irritate and pull your mind off of the game itself. And that does include the shiny and new 3D stuff of today too...
Worst Graphics Ever is a subjective experience. I can't think of what would be mine. I'd be interested to find the graphics I absolutely hate. Just like there was this one time I was searching for music. I listened to an album by Andreas Vollenweider and I found myself laughing and thinking 'I abso-f*ing-lutely hate this music! More!'. After a few sessions, I wished I'll never hear Vollenweider again.
Worst Graphics Ever is a subjective experience. I can't think of what would be mine. I'd be interested to find the graphics I absolutely hate. Just like there was this one time I was searching for music. I listened to an album by Andreas Vollenweider and I found myself laughing and thinking 'I abso-f*ing-lutely hate this music! More!'. After a few sessions, I wished I'll never hear Vollenweider again.