There's a manufacturing show in march at the orange county convention center and its free. You can find it on their website or one of the various trade show search websites. I wish there were some manufacturing expos that had seminars and stuff, they often have really good up to date info.
EDIT: Just saw you work for Aerotek and that they were at the Power Gen show. Were you there? I wish I had known I would've stopped by and said hi. (I am graduating with a BSME in about two years and have a pretty strong manufacturing background)