I'm not exactly sure what Dogway's getting at there..... like you say there, all new PAL TVs are quite capable of displaying a NTSC signal at 60Hz, and I'm going to assume most users on here will at the very least be using a cable capable of displaying it too.. I had both a PAL & US SNES back in the day though, now the vast majority of games were unoptimised for PAL, thus said roms running at 60hz would in fact be identical to their NTSC counterparts.... but I can clearly remember Mario Kart, All-Stars and Tetris Attack being sped up for PAL (I remember using an adapter for these on the US console and Mario Kart for instance being a bit too fast/causing slowdown.....hmmm.... probably not the bloke's point at all, but I'm off testing the PAL versions of these roms!Your 100Hz monitor (or TV) can run at 60Hz if necessary, and will do so if set to 60Hz exclusive mode. I'm not a Wii user so I'm not sure if the Wii can properly set video modes, but if you plug your PC (running Linux, BSD, Windows, or OSX) into your 100Hz TV, I know you can have a fine experience with ~60 fps (usually not exactly, but RetroArch handles it with dynamic rate control for smooth play) NTSC games via RetroArch.
EDIT: LoggerMan: yeah use this instead of the standalone ones!