Thursday night's ratings. CBS's "The Big Bang Theory" series finale went out on a really big (bang) high! An average of 3.1
in the 18-49 demo and a
total of nearly 18 million viewers. The last time a show went out this high on CBS was for the series finale of "Two and a Half Men" back on February 19, 2015 (3.2 in the 18-49 demo and 13.52 total million viewers), and before that it was "How I Met Your Mother" back on March 31, 2014 (5.3 in the 18-49 demo and 13.13 total million viewers). "Young Sheldon" greatly benefited from it as well, scoring its best demo (2.2) and total viewership (13.7 million) in its series run thus far: