I'm starting this community wiki to get all the interpreted languages that can be embedded, but let's begin:

Now if I missed some language, please post and remember to put the link. Thanks.

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Actually Ruby is said to be possible on iPhone, Blackberry, Windows Mobile and Symbian/Android ( soon ) by Rhodes

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You can also get python for PSP, if that's the sort of thing you're looking for.

Java might be the most ported, it's on a whole bunch of mobile platforms (but that's way on the outer edge of interpreted), I have heard that Python is ported to more platforms than Java, but I can't verify that.

List of python on other platforms

Python for PSP seems to no longer exist. Their website is down.

Jeffrey Aylesworth
Can you post links?
Nathan Campos
Hmm.. I went to look for the website, and it seems no longer to exist, shame, it was a pretty nice platform. I did come across a list of python on other platforms though.
Jeffrey Aylesworth
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You can use Python for S60. Please could you share this wiki?