Hands down... the absolute BEST milk tea/green milk tea in the Bay. Although this cafe is dinky and totally unassuming, lines out the door are not uncommon, as the best kept secret has been exposed to the masses. My favorites are the Japanese green milk tea and kiwi green tea, but you can't go wrong with any of the choices.
On weekends, there is also a separate section that sells HK style waffles and HK style egg puffs (very similar to Bubble Act in Milpitas), and it is pure excellence at extremely low prices.
The service is friendly, especially if you are a guy (it's literally a ratio of 10:1 girls to guys employed here), and more efficient than any other boba shop I've ever been to with the possible exception of Tapioca Express in UC.
My only gripe is the lack of seating. Since it is situated in an indoor mall, as opposed to most other similar cafes being outside, there are no outdoor tables, and people don't tend to "chill" here like they do elsewhere.