Record a sketch with or without voice. Explain something, have fun, or create art.
Then embed the sketch player in your blog or point people to your sketch channel.
I can see this program being very beneficial in the classroom, particularly with second language learners, but I can also see parents and kids having fun with it. You can copy the url and send it to someone, or embed it in a blog. It supports several languages too.
Use it if you want your kids to practise giving directions aloud while they draw something to put the directions into context. How about drawing Grandma a picture or showing her the words your child learnt to write at school today? You could copy/paste text of a little story in, and have your child read it aloud to Dad when he's away from home. Of course, you could do the latter with a video camera too, but this would be another, different opportunity.
Learn how to use it via one of Russel Stannard's excellent Teacher Training Videos.
Photo Credit Flickr