Check out these web sites

• Science is Fun in the Lab of Shakhashiri
• Delights of Chemistry
• UCI Chemistry Outreach
• Michigan State University: Science Theatre
• North Carolina State University: Chemistry Outreach
• University of Minnesota's Chemistry Outreach Program
• University of Southern Maine: Chemistry Club
• Science Resource Center
• Physics lecture demonstrations at Boston University
• University of Illinois Physics Van

Also check out these books:

• Chemical Demonstrations : A Handbook for Teachers of Chemistry Vol 1 by Bassam Z. Shakhashiri
• Chemical Magic by Leonard A. Ford
• Chemical Curiosities by Herbert W. Roesky and Klaus Mockel
• Chemical Demonstrations : A Sourcebook for Teachers by Lee R. Summerlin, Christie L. Borgford and Julie B. Ealy
• Cool Chemistry : Great Experiments With Simple Stuff by Steven W. Moje