Off the top of my head we have the following in Southern California:
--SoCal Blades sponsors their Blade Expo every year. The show is very good. Unfortunately, their website is designed and maintained by what must be a six year old, so it's next to impossible to know when the show is actually scheduled.
--Nordic Knives in Solvang hosts what is now probably the most acclaimed knife show in all of California (although I would understand if the BAKCA folks begged to differ).
--Plaza Cutlery located in the South Coast Plaza in Orange County is also doing their show again. Haven't been to this one yet personally, but the list of makers looked very promising this year.
I may be able to dredge up some links.