SafeShare.tv -- you can view YouTube videos without displaying the related videos and associated comments. Justsimply copy the url of a YouTube video and paste it into SafeShare.tv. Free, of course.
CmapTools (free, of course) allow for the developing of concept maps and you can link to images, videos, documents, etc. Not quite as flexible as Inspiration (which is my favorite, but it costs money), but a good option.
VoiceThread is a collaborative tool that allows collaboration online. Responses may take the form of video, audio, doodle (drawing) or typing) and also phone (scheduled call which will record). Many ways to accommodate learners. Highly recommend. Free, but I upgraded to Pro version.
Audioboo allows you to record podcasts and upload to web; designed for mobile phone, but can be done from PC too. Can embed on website our automatically upload to Twitter or Facebook. Lots of potential.
Audio recorder--easy to use--can send digital audio over email, add to website. Free version allows up to 1 minutes of recording, which is fine for most purposes.