Does IMDB have a list of the highest-rated TV programmes

You can get the top 50: Votes by males

Note: To get to this page, I clicked on the Tops at the Box Office link and chose Votes by Gender on the left side.

If you do not want to create an IMDb account and set your preferences there you need to:

Add X-FORWARDED-FOR with U.S. IP address to your HTTP headers. You can lookup example U.S. IP address from any proxy list, e.g. http://proxylist.hidemyass.com/.

The X-Forwarded-For (XFF) HTTP header field is a de facto standard for identifying the originating IP address of a client connecting to a web server through an HTTP proxy or load balancer. This is an HTTP request header which was introduced by the Squid caching proxy server's developers. A standard has been proposed at the Internet Engineering Task Force (IETF) for standardizing the Forwarded HTTP header.

Here are some simple instructions: http://sobizarre-en.blogspot.com/2014/12/how-to-easily-defeat-imdb-geolocation.html

You also need to remove any existing (file) cookies from IMDb in order to not keep using the settings that were assigned to you/your session when you first accessed IMDb.

In Chrome you can do that by typing chrome://chrome/settings/cookies in the address bar and then typing in "imdb" in the window that opens (click the x to the right on each row to delete. The x will not be visible until you hover over the row.)