Jerry Woodall and his team at Purdue are back with developments of the aluminum gallium reaction for generating hydrogen in consumer volumes. See:

http://news.uns.purdue.edu/x/2007b/070827WoodallNanotech.html
The first news broke in May of 2007 and looked good at first. The concept was soon clobbered by some:
http://forum.physorg.com/index.php?showtopic=14952
as the price of gallium used was prohibitive and the recycling issue [...]