A great place to shop for Asian foods. My wife is from Thailand and I like both Thai and Chinese food a lot. This place is one of the few places in the Valley you can buy authentic items from Thailand, China, Taiwan, Japan, and other Asian countries. They have a really nice selection of sauces and spices.
In the past I've poked around the grounds as well. They have other shops surrounding the market where you can buy "Asian-related" items such as furniture or DVDs. The Chinese Cultural Center is worth a visit while you are there. And there are some nice pagodas and statues to check out as well in the park. It's a nice way to spend a hour or so shopping and walking around on a weekend afternoon.
Also, they have a little cafeteria inside the market in the back corner to your right as you enter the market. The Chinese food was OK, but the freshly made green tea was very impressive tasting! They have a fresh bakery onsite too which is cool, but steer clear of the dumplings here unless you like paying $1.50 for a mini sized Vienna sausage surrounded by bread!