24p is that standard you would see in films, like in the cinema basically, at home we use NTSC which comes in at 30p/60i
Because NTSC video comes in at 30p it has a higher framerate then 24p. So for fast moving gaming NTSC should be superior. Im guessing that tv would support both 24p and NTSC 30p so I dont think you would need to worry about 24p much. But check to be sure.