Why is everything about the US & UK at the sec?

Its like the 2 countries have moulded into 1, like game shows im seing more and more joint US and UK contestants. Films, theres always a random Brit thrown in a American film lately/ vise versa. On our daytime tv we are sharing more and more tv shows especially comedy. Even most the questions on yahoo in politics section are UK & US when there are other countries fighting the war. OK we all know about the war, but has something else happened that im not aware of, or am I imaginging it?? There are other English speaking countries but always UK & US.