Put your favorite places for hacker supplies here to share with other members. Please try to include a URL if they've got one, a physical address or link to a map if they're local, and a description as to why you think it's a great place. Add your own comments to the places you see here.

LA Local Businesses

• All Electronics Van Nuys (map) - Open 7 days. Mostly surplus electronics. Also available for online with flat rate shipping. I've found their staff to be helpful and it's a fun place to wander around and look at their ever changing stock. (pictures)
• Apex Electronics Sun Valley (map) (address and contact info) - Open Mon-Sat. Surplus electronics plus all manner of junk. The web site only offers a limited range of stuff. You have to see this place in person! Check out the panoramas to get a sense of it. It's possible to get some great deals here, though sometimes they act as if their products are like a fine wine... improving with age, and they charge accordingly.  They have a bin filled with solid aluminum bricks in the yard that could be used for milling. (pictures)
• Electronics City Small shop in Burbank with a good supply of enclosures. (pictures) 
• Fry's Electronics Manhattan Beach (map) - Open 7 days. We all know the good and the bad about Fry's. This is the closest one to CrashSpace, but also the smallest Fry's Electronics store in the chain.
• Grainger Many Cities (nearest)  (brances in the 310) - Usually open 7-5 M-F, though some branches are open on Saturday. Industrial supply. See entry below for online supplies. Grainger has branches all over the place. If the part you want isn't in stock at the closest branch, there's a chance it's at another one within driving distance.
• Harbor Freight Multiple including Lomita, Woodland Hills, Pasadena - Open seven days. Inexpensive source of cheap tools and miscellaneous doodads. 
• ITC Electronics‎ http://itcelectronics.com/ Proably the closest real electronics store to CrashSpace.  Not great, but way better than Frys or RadioShack. 2772 W Olympic Blvd, Los Angeles, CA‎ - (213) 388-6600‎
• Industrial Metal Supply Sun Valley (map) - Open Mon-Sat. If you need metal of any size or type they've got it. Service is notoriously slow. Expect to be there awhile, even if you've phoned in you're order. Spend the time poking around their large, fun to see showroom!  (pictures)  This is the place to buy metal!  About $2/lbs of T6061 Aluminum.  They also have lead ingot bricks, sheet metal, etc.
• Luky's Hardware Burbank (map) Open Mon-Sat. They are a surplus hardware store with a large selection of nuts and bolts. The isles are packed tight with stuff, so it's fun to walk around.
• McMaster-Carr Santa Fe Springs (map) - See entry below for online supplies. If only this were a retail store you could wander through! Alas, it is not, though paging through their notoriously hard to get paper catalog is almost as fun (and using their web site is close to that experience). I'm listing McMaster here because they are somewhat close by, and they offer will-call pick-up at their facility. They also do same day delivery to our area... order it this morning, have it this afternoon!
• Opamp Technical Books Hollywood (map) - For those hard to find technical specialty books (pictures)
• Pacific Radio Hollywood (map) Burbank (map) - Lots of specialized radio/television electronics.
• Signal Electronics Torrance (map) - Open Mon-Sat. Small well organized store with knowledgable staff. A bit more expensive.
• Torrance Electronics Torrance (map) - Open Mon-Sat. Small really chaotic store. Stuff stacked everywhere, but good prices and selection.
• Discount Bearing Co (map) (address and contact info) - Open Mon-Sat.  Saturdays until noon.  Bearings, belts, sprocket chains, electric motors.  It is a few blocks east of Apex Electronics in Sun Valley.
• Hastings Plastics (map) (address and contact info) - Open Mon-Sat til 5:30.  Nice people, very local in Santa Monica off Colorado Ave.  Resins, plexiglas, foams, tons of acrylics.  They have a shop as well to cut sheets down to size. 

Local Hardware Stores

• A-1 Hardware‎ - 11119 Washington Boulevard, Culver City, CA‎ - (310) 559-9594‎
• B&B Hardware - 12450 West Washington Boulevard, Los Angeles, CA‎ - (310) 390-9413‎
• OSH - (map) 2020 S Bundy Blvd (310) 571-3838 

Online Supplies

• Ada Fruit Industries - They develop cool pieces of their own, so it's a small specialized collection.
• Goldmine Electronics - Surplus electronics and cheap grab bags of parts. 
• Grainger - Industrial supply. Almost (but not) as good as McMaster-Carr.
• McMaster-Carr - Industrial Supply. You can find almost anything here. The web site works really well.
• Small Parts - All the specialized little pieces you might ever need.
• SparkFun Electronics - A company dedicated to hacker electronics with an ever growing selection.
• Jameco -  Parts & Componets. Really good integration of paper and web-based catalog. Easy to find stuff.
• DigiKey - Parts & Components The have everything but their site is hard to use unless you know EXACTLY what you are looking for.
• Mouser Electronics - Another one of the biggies. (i.e. D-Subminiature Connectors (19,525) ) that are better when you know what you want.

Online Services

• Ponoko - They are a laser cutting service with a variety of materials. 
• Protocase - They build metal cases and do small runs, and were helpful with a project I was working on.
• Shapeways - 3D printing on demand with a variety of materials that can do fine detail work.