Bob Costas is a famous sports announcer and was the main face of NBC's Olympic coverage.
What's just great is that he's just like the rest of us, he agrees NBC did a pretty terrible job of covering the Olympics!
He was recently on Conan and was absolutely tearing up NBC!
He even got Conan to call him his "best guest ever."
Check out the video (above) to see Costas tear NBC a new one!