Julie also mentioned that Teuscher's champagne truffes are Oprah's favorite -- and after sampling them, I understand why. The creamy chocolate treats are flown in from Switzerland weekly to ensure their freshness, and they're made with high-quality ingredients (for example, the champagne center actually contains Dom Perignon).
In case you're wondering, chocolate this good does come with a hefty price tag (about $1.85 for a champagne truffe, $5.50 for a chocolate bar). Kids -- if you're allowing them to indulge, too -- will go nuts for the molded chocolates in fun shapes like pigs, butterflies, elephants, airplanes, etc.
(BTW, truffe and truffle are the same thing, different languages. Teuscher prefers the French spelling, so that's what I went with in this post.)
Teuscher
Stanford Shopping Center
Palo Alto, CA
(650) 384-0916