The "bladed jigs" are very popular right now in Southern California. More so for salt water fishing than fresh water, although some people use them with good results for LMB.
Im not positive if you are talking about the same thing I'm talking about or jigs with an "under spin".
This is the "war blade" made by warbaits....although a much cheaper one can be made by yourself with a weedless jig, a blade and swivel, and cheap plastic tubing:
http://www.warbaits.com/armory-WARBLADE.html
Either way it's a really nice reaction bait...I'm gonna try throwing them this summer to see if they work on the east coast fish the same way they work out here in Cali.