Those interested in rankings of universities (perhaps ones that are a little more serious and objective) should take a look at the Academic Ranking of World Universities (the so called “Shanghi Ranking”).
While it ranks the top 500 universities from around the world, you can also easily view university rankings of specific countries (and how they relate to the worldwide ranking), in particular: USA, UK, Germany, Canada, France, Australia, Japan, Switzerland, Sweden, Netherlands, Denmark, Belgium, Israel, Norway, Finland, Russia, and China. You can also view the top 200 universities in broad areas: Natural Sciences and Mathematics, Engineering / Technology and Computer Sciences, Life and Agriculture Sciences, Clinical Medicine and Pharmacy, and Social Sciences; and top 200 universities in specific disciplines: Mathematics, Physics, Chemistry, Computer Science, and Economics / Business.
As with all rankings, this one too, should be taken with a grain of salt (and those interested should look what the rankings are based on and how they were created).