Boeing's proposed plasma shield would protect against shock wave but not shrapnel.
http://www.popsci.com/boeing-just-patented-force-field-lasers (http://www.popsci.com/boeing-just-patented-force-field-lasers)
Very cool.
Interesting idea. I doubt it could be used against IED's like the article suggests, but it could protect light armoured vehicles from say a mortar attack.
Anything that helps save soldiers' lives is a damn good thing. I just hope they don't take 30 years to get it through the red tape. By then we'll have real personal shields, and I'll be too old to care.