InventorSpot

Before the BBQs are lit or the bonfires set ablaze during this Fourth of July weekend, it might be nice to brush up on some American history. What better way to do that than to go back in time?

Ten two-minute films on the art of seduction, directed by the likes of Isabella Rossellini and Guy Maddin. Four ways to watch the films: on mobiles, online, on the big screen or small. One enticing site to host them all.

If you're looking for a how-to video on ... just about anything, you might find it on WonderHowTo.com, a community search engine that indexes over 130,000 instructional videos.

Short-term memory not what it used to be? Post a sticky note on Postica. Plus, you can attach files and share with friends or family. It's easy. And free.

NBC's iCue provides a fun, interactive and collaborative online learning environment for students and lifelong learners.

At community-moderated Totlol, parents and young children can enjoy watching age-appropriate videos that have been screened by other parents. So don't worry, be happy.

Creating a mixtape has never been easier: search for songs, drag and drop your favorites into a playlist, customize your tape, publish and share with your friends. All online, free and environmentally friendly.

A new online guitar site offers a fun and truly interactive experience in playing the guitar and singing along to some popular songs. Rock out from the comfort of your own bedroom, study, kitchen or closet.

Create art and music with the wave of your hand. This interactive audio-visual art installation generates sounds and images that reflect the relationship between the viewer's movements and changes in space.