Thanks for the reply, mbee... I've actually got quite a good tutorial on mouth shapes for phonetics (one of the great Michael Comet tutorials) - it wasn't so much the mouth-shapes of sounds I was looking for as a specific tutorial on low-poly animating of mouths. I tried your suggestion of looking for phonemes and tried searching (Google) with "phonemes, animation", "phonemes, half-life", and "phonemes, deus ex" amongst others, but still can't find what I was looking for. I did find an interesting interview with the Deus Ex creators, though, who say that they used seven mouth shapes for phonemes in that game. Not that I'll need anything so complicated. Half-Life only seems to use two mouth-shapes (open and closed... duh). I know an easy way to do this is to 'animate' the skin of the model, but I figured that as there are so many Half-Life tutorials and models online, there might be a tutorial on how they actually modelled, boned and animated the mouths in that game somewhere on the net... It would be nice to have some decent mouth-movement, even if I'll probably never get any decent voice actors for tuppence each...
Thanks,
Keith