Today's Immigration Rally Police estimate around 400,000 people showed up to today's immigration rally downtown. Some organizers say it was closer to a half-million. Carol Marin and her panel look at both sides of the immigration debate that brought record numbers to the streets. There is no debating, however, the impact of today's events. Christian Farr was there and tells us how traffic, businesses, and security in the Loop were affected.

News Analysis with Eddie Arruza Once upon a time, Chicago was known as the nation's "convention capital." But now the city is behind Las Vegas, and for the first time, Orlando, Florida. Eddie Arruza and his panel look at why Chicago keeps losing conventions and what can be done about it. Guests: Greg Saunders, Leticia Peralta Davis and Lorene Yue

Art Show Fiasco The impressario behind Art Chicago won't reveal what almost derailed this year's show - but there's a happy ending for more than 100 exhibitors. Rich Samuels has the latest on a major fiasco in Chicago's art world. Also: Nova Art Fair

News Analysis with Joel Weisman Is Governor Blagojevich's $10 million stem cell plan just a political ploy? Joel Weisman and his panel of pundits weigh in on the governor's plan and other hot political issues. Guests: Carlos Hernandez Gomez, Paul Green and Bruce Dold.

News Analysis with Carol Marin More heroin spiked with fentanyl has sent users between the ages of 17 and 73 to the hospital. Since August, dozens have overdosed on the lethal combination and more than 10 have died. Carol Marin and her panel will look at where we are in the war against heroin. Guests: Bob Milan, Herb Hunter and Dan Bigg

Chicago Tonight: The Week in Review Lawyers on George Ryan's defense team are laying the groundwork for their appeal. The unsealed court filings reveal lawyers for Ryan furiously tried to oust four other jurors for lying on questionnaires. What's the verdict's political fallout? Mayor Daley and Governor Blagojevich's administrations are each already under investigation. A tradition at the art institute is ending. The Chicago Park District voted to dump the "suggested" admission fee and will begin charging $12 for non-members.

Vegetable-Based Fuel A garbage truck that runs on vegetable-based fuel? Hammond, Indiana, has one and it's about to get more. Rich Samuels has the story of a Chicago company that's developing a cheaper, greener alternative to diesel. News Analysis with Joel Weisman More record prices at the gas pumps. Joel Weisman and his panel look at what's behind the rumored increase to four dollars a gallon. Guests: Dave Sykuta, Paul Brian and Brian Imus

News Analysis with Joel Weisman We'll hear what the candidates for Lieutenant Governor of Illinois have to say about the George Ryan verdict. Guests: Pat Quinn, Joe Birkett, Mike Flannery Stroke Imaging Technology We'll take you inside Northwestern Memorial Hospital for some groundbreaking research for stroke victims.

Chicago Tonight: The Week in Review State budget negotiations head into overtime, Reverend James Meeks talks to Cardinal George about running for governor, community policing push in Englewood, white flight alleged in school league break-up, the University of Illinois hiking tuition, Cubs slugger Derrek Lee signs 5-year deal, and the Bulls in the thick of the play-off hunt. Guests:

News Analysis with Eddie Arruza The topic of immigration reform has caused massive demonstrations across the country, including on Capitol Hill. Tonight we'll hear from two men with very different views, Rep. Luis Gutierrez and Jim Oberweis. Author Garry Wills It's a provocative title, from an author who's never been afraid to stir the pot. Garry Wills will be here to discuss What Jesus Meant.

City Hall Scandal Mayor Daley responded today to the latest allegations of City Hall corruption. Rich Samuels has the mayor's remarks, as well as a barrage of reporters' questions the mayor didn't always answer fully. Read the Sorich Santiago Proffer here.

News Analysis with Elizabeth Brackett A lawsuit was filed in federal court today against 13 south suburban schools. The suit charges the schools with "white flight" for pulling out of the area's racially diverse athletic league for no reason other than race. Elizabeth Brackett and her panel will take a closer look at the charges

The Missing Link? The missing link between sea and land animals may have been found. We'll hear from the University of Chicago scientist who led the team that made the discovery.

News Analysis with Elizabeth Brackett To run or not to run - that's the question facing Rev. James Meeks. We'll hear from representatives of the Blagojevich and Topinka camps about their early campaign strategies and their thoughts on the wild card in the race for governor. Guests: John McGovern, Doug Scofield, Laura Washington

News Analysis with Carol Marin After a three-hour rain-delay, the world champion White Sox started the 2006 season with an early morning win over the Cleveland Indians. Carol Marin and her baseball panel will also talk about the Cubs' opening day thumping of the Cincinnati Reds. Avian Flu We'll look at research being done in Chicago that could protect us from the Avian Flu.

Chicago Tonight: The Week in Review Get ready for Dan Ryan gridlock, two new jurors appointed in the George Ryan trial, Rev. James Meeks weighing a run for governor, the city council green-lights plans for the nation's tallest building here, new federal regulations could mean higher gas prices, and the Cubs and Sox ready for a brand-new baseball season. Guests: