If you want to see theater in one of its most nerve-racking forms, look no further than actor Colin Mochrie. The comedian is best known for his role on the short-form improvisational comedy show "Whose Line Is It Anyway?" Mochrie has a richly deserved reputation for his skill at improvisation. We talked with him about his craft.

Christopher Kimball is one the biggest names in cooking. Best known as the longtime host of the popular TV and radio show, “America’s Test Kitchen,” he also published the magazine “Cook’s Illustrated.” Last year, he launched a new project called “Christopher Kimball’s Milk Street.” The Boston-based venture teaches cooking, publishes a magazine, and produces a TV show. Celeste Headlee spoke with him about recipes and modern foodie culture.

Sports protests have made major news this year. In September, President Trump went on record disparaging professional football players for kneeling during the national anthem. The President’s comments seemed to inspire more players to take a knee at NFL  games, and in high school stadiums. The Atlanta Falcons were among many players, coaches and owners who have locked arms during the anthem to protest racial injustice.

Fifty years ago, two athletes brought this kind of silent protest to the Olympic medal podium. Track stars Tommie Smith and John Carlos raised their fists in a Black Power salute during the ceremony. We spoke with Tommie Smith last year after he and John Carlos were honored by President Barack Obama.

"Auld Lang Syne" is just one example of a popular holiday tune that has very little to do with the holiday when it’s sung. We at On Second Thought have your back. We’re here to break it all down.