Grand prix, World Cup and Moto GP on TV

I have Showtime but there doesn't seem to be any coverage of the Grand Prix. I think I saw the Moto GP on one channel last year when I first arrived but can't remember which one. I have Showtime but can also get Al Jazera card if neccessary but not sure if they cover GP as their website does not tell you. Alternatively is there a dependable internet site that anyone knows about that guarantees good coverage of the GP's? Whilst on the same subject does anyone know whether Showtime will be covering the World Cup this summer or do I need to make alternative arrangements? thanks