Sometimes I stumble upon interesting sites on the Web, and I have to thank my virtual lucky stars for this one - a Ning about VoiceThread for Educators: http://voicethread.ning.com/. It looks like a great place to begin collaborating with other teachers about using VoiceThread in the classroom.
I also found a great little VoiceThread about a First Grade trip to the beach: http://voicethread.com/#u86913.b184115.i1026128. What a wonderful way to reflect on a fieldtrip!
I was very impressed by the Colour Poems on this VoiceThread: http://voicethread.com/#u86913.b184115.i1026128. The photographs are lovely, and the children's voices are just delightful. I would show this to students as a starting point to write our own colour poems, or as an example of what can be done with VoiceThread.
In closing, I thought I was in love with wikis for classroom collaboration, but I'm finding VoiceThread incredibly inspiring. It is definitely my new favourite Web 2.0 tool (no offence, wiki, I still really, really like you!)