People in a message below have asked me to post more information about this place.
Galco's has soda from all over the world. Their inventory is always changing, they have specials, and for you can join their case card club ($25 fee). You recieve $5 off every case you buy.
If you remember a soda from your childhood or world travels, most likely they will have it. They also have a large selection of waters, beers and wines.
Their prices are little high on some sodas. I've noticed you can get some brands (although very few) now at Cost Plus. This is the largest selection of different sodas I have ever seen.
I've posted their website address below, you can see their inventory there. I highly recommend it, I've been going their for a year now, and keep a record of each soda I try, what I liked and/or disliked about it.
They have been featured on Food TV Network on Food Finds and another one of their shows. Huell Howser even did an episode on them.
The address is:
5702 York Boulevard,
Los Angeles, California 90042