Matt Lauer will replace Bob Costas for Wednesday night's Olympic coverage
Cahow won two Olympics medals and three world championships while playing ice hockey
"The Colbert Report" host explains scissoring
IOC president Thomas Bach encouraged the athletes "to live together under one roof in harmony, with tolerance and without any form of discrimination"
"Spider-Man: Turn Off the Dark" choreographer Daniel Ezralow premieres his 20th Century Russia-themed opening ceremony performance at the Sochi Winter Olympics on Friday
The "Today" host says the NBC team is ready for the security risks
"The Russians have done everything humanly possible," the former Republican presidential candidate and CEO of the Salt Lake Organizing Committee said
The two NBC personalities are torn on the Sochi Winter Olympics