... IT WORKS!!! Took my NTSC GameCube into a local store today, and they very kindly agreed to let me test it on the 32Z26P. Plugged in the component cable, booted up Rogue Leader (holding down 'b' to enable 480p mode), answered 'Yes' when asked if I wanted to run the game in prog scan mode, and BINGO it worked (the screen blipped slightly, obviously switching to progressive mode). I've tried other Toshiba sets and they haven't worked at all, so I'm guessing that this is 'true' progressive and not the TV itself performing the de-interlacing internally. Picture quality is outstanding BTW.