Feature suggestion: git grep --blame

Hey folks,

It's occurred to me on several occasions that a useful output option  
for `git grep` would be to prefix lines with the same commit/author/ 
date annotation that `git blame` shows when viewing an individual  
file.  I didn't find anything myself with a quick google search so I  
was wondering if anyone a) has a recipe for this either with a trivial  
command alias (I couldn't come up with one myself), b) know if this  
has been done/attempted before, or c) have a reason why this is a  
really stupid idea? :-)

Regards,

David
--
David Christensen
End Point Corporation
david@endpoint.com