Yeah and we have PAL, which is basically an improved version of NTSC, which has always meant less messing with the TV (to sort out the colour mainly).
Of course, this had the downside of having all the snes games running slower than jap/US versions thanks to lazy-ass programmers not bothering to update the code properly for PAL (they did not adjust for the change from 60 to 50 Hz - just let the console do more work and run slower. slackers.).