Dr. Amy Hummel, a Milwaukee emergency room physician, will appear in the semifinals of the "Jeopardy! Tournament of Champions" on Wednesday. Here's what to know about her and how to watch the ...

At the end of "Jeopardy!" Monday, host Ken Jennings called Amy Hummel "the Big Kahuna." Why? Because the Milwaukee ER doctor won the game for a fourth time. While opponent Ferdinand Percentie ...