This is a great website that was forwarded to me by a friend.  Broaden students' scientific communication skills by condensing the descriptive chemistry of an element down to a haiku.

This is a website which links to a wide variety of good quality YouTube mini-lectures on basic topics in chemistry, mathematics, physics and a variety of other sciences.  Each video is about 10 minutes long and many go through example problems slowly and completely.  

http://firstyear.chem.usyd.edu.au/iChem/lewis.shtml

A set of Flash-based, interactive tools for students to construct Lewis structures for electron deficient, octet rule obeying and hypervalent ML_x molecules and ions (x = 2 - 6).

The user chooses the number of electrons and bond type (single, double or triple) and is steered towards the correct stucture.

For cases where resonance structures are possible, the user must construct each form to complete the puzzle.

I read about these new biology examples for intro chem in a recent Association for Women in Science (AWIS) Washington Wire (December 2009, Issue II).  Professor Catherine Drennan from MIT and her colleagues introduced "examples of biological and medical topics that demonstrate chemistry principles into her introductory chemistry lectures to highlight the connection between the fields of biology and medicine, that students often love, and chemistry."  Their assessment showed that the examples increased student satisfaction with the course.

A neat site that quizzes you on chemical symbols (e.g., Ag for silver), and donates rice for right answers. Hey, if students are going to learn chemical symbols, they may as well do it in a game setting, and many will find it a touch less pointless if they're doing someone else some good at the same time.