My buddy (who is the engineer for KeenCell) is looking for a few extra phones. He bought Devil's two iPhone 3GS's last year (through me).
These are the models he is looking for:
Motorola Atrix 4G
Motorola Milestone
HTC Evo 4G
HTC Desire
HTC Magic
Samsung Galaxy S (4G)
Samsung Galaxy S2
Samsung Fascinate
Blackberry Storm 2
Blackberry Curve 3G (either 9300 or 9330)
Sony Ericsson Xperia Pro
Sony Ericsson Xperia X8
Sony Ericsson Xperia Play (unlikely to find

)
Any of these phones will be used to help develop and test the latest and greatest battery charging tech.
Since it's a relatively small company, we can afford used, not new prices.
www.keencell.com is the company, in case you were curious.