Events that will matter.

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Some 18,000 investors and employees will pack the Wal-Mart headquarters in Bentonville, Ark., for the company’s annual shareholders meeting. Analysts will be especially interested to see how the U.S.’s number one retailer responds to the country’s current economic woes.

Exposing the Issues
The World Naked Bike Ride starts in the U.S. this weekend. Since 2004, nude cyclists have been taking to the streets to draw attention to issues like oil dependency, alternate transportation and bike safety, and rides are now held in 70 cities in 20 countries.

Big Brown & The Crown
After taking both the Kentucky Derby and the Preakness, three-year-old stallion Big Brown can become the sport’s first Triple Crown winner in 30 years with a win at the Belmont Stakes. The last horse to sweep all three races was Affirmed in 1978.

Testing the Waters
Representatives from 104 countries will be in Zaragoza, Spain, this weekend to celebrate the opening of the three-month-long Expo 2008. A 262-foot-tall transparent water tower has been built as a symbol of this year’s theme: Water and Sustainable Development.

Broadway’s Big Night
After keeping a rather low profile of late, Whoopi Goldberg will be back in the spotlight as the host of the 2008 Tony Awards. Latino musical In the Heights, one of the year’s surprise successes, has been nominated for 13 awards—the most of any production.

Split Decision
Disagreements over gay marriage and gay clergy has led many conservative church leaders to announce that they’ll skip an important Anglican gathering, called the Lambeth Conference, next month and instead hold their own summit in Jerusalem.

Here Comes “Party A”
Unless the Supreme Court intervenes, same-sex couples will be able to marry in California starting June 17. The state’s newly updated gender-neutral marriage forms now identify couples as “Party A” and “Party B” instead of “Bride” and “Groom.”

A Tamer Tiger
The final day of the U.S. Open, the second of golf’s four major championships, always falls on Father’s Day. After a two-month layoff following knee surgery, Tiger Woods, a two-time U.S. Open winner, will be back in action at San Diego’s famous Torrey Pines.