My sons teacher shared the results of a long range study done on reading to children and it had followed children from all different types of social and educational background from infacy to school leaving age. It showed that children who were read to from an early age (about 18 months I think) rapidy overtook ther peers by about 2 years in their reading age shortly after starting school. This was not related to their background at all. The interesting thing was, that no matter what work was done with the other children, they never caught up and the gap in reading age at 16 was roughly the same.
I read to my children early on and we are all regular readers in our house and my son who has only just completed his first term in P2 has just passed a reading test, which includes comprehension, designed to be passed by most children by the end of P4 in addition, he gained an almost perfect score.
My sons both love computer games, but they still go to bed every night with a book or two!