Here are some of the high-profile Ideas Week speakers and Talks:
Colin Powell and Tom Brokaw, both on Monday's 4:30 p.m. program "Military: From the Front Lines to the Home Front" at the Goodman Theatre.
"Meet the Press" moderator David Gregory, Time senior political analyst Mark Halperin, Mayor Rahm Emanuel and the mayors of Philadelphia, Houston and Fontana, Calif., on the "Democracy: State of Our Union" Megatalk at 7 p.m. Monday at the Oriental Theatre.
Actor/philanthropist Edward Norton on the panel "Giving: One Matters" at 4:30 p.m. Tuesday at the Goodman Theatre.
America Online co-founder Steve Case among the Megatalk speakers covering "Disruptive Innovation: Reinventing Our World" at 7 p.m. Tuesday at the Oriental Theatre.
Authors Deepak Chopra and Mitch Albom among the speakers tackling the modest subject "Meaning of Life: What's It All About?" at 7 p.m. Thursday at the Oriental Theatre.
Hip-hop artist Lupe Fiasco and Cheap Trick guitarist Rick Nielsen among the musicians joining Tribune rock critic Greg Kot and his "Sound Opinions" co-host Jim DeRogatis on "Music: Tuning In" at 7 p.m. Thursday at the Museum of Contemporary Art.
Model/actress Elle Macpherson as part of "Fashion: Why Are You Wearing That?" at 4:30 p.m. Saturday at the Museum of Contemporary Art.
Bioethicist Ezekiel Emanuel as part of the "Health & Wellness: Power to the Patient" discussion at 10 a.m. Sunday at the Museum of Contemporary Art.
Writers for "The Daily Show," The Onion and "Parks and Recreation" dissect 21st-century humor at "Comedy: What's So Funny?" at 7 p.m. Saturday at the Museum of Contemporary Art.