SIGG Switzerland, the company that makes my favourite reusable beverage bottle, is turning 100 years old — and they’re planning an online celebration with a great green theme, celebrity chat, and a chance to win a trip to Hawaii.

To mark this milestone, SIGG Switzerland, along with Laurie David’s StopGlobalWarming.org, will launch www.sigg100.com and explore the 100 Top Eco-Moments of the past century.

From February 11 – April 22, 2008 (Earth Day), SIGG will unveil 10 historical eco-moments every week.

Visitors to www.sigg100.com are invited to vote on the most significant eco-moments for a chance to win a free trip to Hawaii for the Kokua Festival, with accommodations provided for by Waikiki Beach Marriot Resort and Spa.

Environmentalist celebrities will be turning up to chat with site visitors, too, through a bi-monthly Q&A series. It kicks off with the Academy Award winning producer and author Laurie David on February 12th at 2pm PST.

Other chat hosts will include actor and activist Ed Begley Jr.; the Oprah Winfrey show and NBC Nightly News environmental contributor P. Simran Sethi; the founder of EcoFabulous.com and Domino Magazine’s eco-editor Zem Joaquin; and Executive Director of Healthy Child Healthy World, Christopher Gavigan.

This is a limited-time event, remember! SIGG’s 100-year celebration starts tomorrow, 11 February, and will wrap up on Earth Day, 22 April, 2008.