As pilot:
Montgomery Field (MYF), San Diego, CA
Gen. William J. Fox (WJF), Lancaster, CA
Van Nuys (VNY), Van Nuys, CA
Barstow-Dagget (DAG), Dagget, CA
Santa Monica (SMO), Santa Monica, CA
Mojave, Mojave, CA
California City, California City, CA
Camarillo (just a land-and-go in the heli), Camarillo, CA
Santa Barbara, Santa Barbara, CA
Apple Valley, Apple Valley, CA
Henderson Sky Harbor, Las Vegas, NV
McCarran International (LAS), Las Vegas, NV
Fresno Air Terminal (FAT), Fresno, CA
Bakersfield, Bakersfield, CA
Red Bluff, Red Bluff, CA
Medford (MFD), Medford, OR
El Mirage, El Mirage, CA
Burbank, Burbank, CA
And various off-airport helicopter landing areas
As passenger (not including above):
Lindbergh Field, San Diego, CA
Los Angeles, International (LAX), Los Angeles, CA
John Wayne International (SNA), Orange County, CA
San Francisco International (SFO), San Francisco, CA
Moisant (MSY), New Orleans, LA
Seatle, Seattle, WA
Bellingham, Bellingham, WA
London Gatwick (GAT), London, England
Dallas-Fort Worth (DFW), Dallas, TX
Denver (DEN), Denver, CO
And one on Alaska and one in Japan when I was three years old
Airshows/just hanging around:
Edwards AFB, Edwards, CA
NAS Point Mugu, Point Mugu, CA
NAS Miramar, San Diego, CA
Chico, Chico, CA