Brenda Laurel proposes that Atari make videogames for humans to play together with dolphins:

Is there a videogame we could imagine that a human and a dolphin could play together? Of course, HCD couldn't sell it (without an extensive marketing effort to get hardware into dolphin homes, or into all those joints where humans and dolphins hang out together). However, such a game would let us ask some real basic questions about the nature of interaction and "fun". We could also ask some esoteric ones about the nature of imitated action, semiotic thresholds, cognitive and kinesthetic response patterns, etc., etc. All this in addition to the obvious questions about interspecies communication!

Successful design/implementation of the above would give us enough data about dolphins to simulate a dolphin persona inside a video game for humans, yielding a superb learning/game product, based on a topic with tremendous popular appeal.

Seriously now, folks, this is just crazy enough to be great. I suggest that Sandra and I and whoever else is interested go brainstorm with the Lilly folks and come up with two proposals: one for research, and one for a consumer product. Whaddaya think?