Former British Prime Minister Tony Blair and U2 lead singer Bono are the biggest names who will appear - in their cases via satellite - at Willow Creek Community Church's annual Leadership Summit Thursday and Friday.

Many of the 17 speakers will appear live at South Barrington megachurch's summit over the course of the two days.

The main location is already sold out, but there's still space available to watch via satellite at Community Christian Church, 1635 Emerson Lane in Naperville.

The Naperville church is one of more than 200 satellite locations across North America. About 60,000 business and church leaders are expected on the South Barrington campus itself, with tens of thousands more participating at the remote locations.

Speaking simultaneously by videocast at 11 a.m. Thursday will be management consultant and author Patrick Lencioni, former CEO of Hewlett-Packard Carly Fiorina and Gary Hamel, who was named the top "Business Thinker of 2008" by The Wall Street Journal.

Speaking in person Thursday are Tim Keller, senior pastor of Redeemer Presbyterian Church in Manhattan at 2 p.m.; Jessica Jackley, co-founder of Kiva.org, at 3:30 p.m.; and Harvey Carey, the founder of Citadel of Faith in Detroit, at 3:30 p.m.

On Friday, Bono will give an update to the evangelical church's response to the threat of AIDS by videocast at 3 p.m. He will be followed by Blair's videocast at 4:15 p.m.

Friday's live speakers include Andrew Rugasira, founder and CEO of Good African Coffee, at 9 a.m.; CNN and PBS political analyst David Gergen at 11:30 a.m.; and Chip and Dan Heath, best-selling authors of "Made to Stick" and "Switch," at 2 p.m.

Both days of the summit will be hosted by Willow Creek's founder and Senior Pastor Bill Hybels.

Attendance prices range from $185 to $375 depending on group size, date of purchase and other considerations.

To register, call (800) 570-9812 or visit willowcreek.com/summit.