I just moved to Boston, so the Harp is my new stomping grounds, but I spent the last three seasons at the Britannia Arms. Great people there to enjoy the games with. Definitely a much smaller crowd than the harp, and much more accepting of other teams' fans, but it was always a good time.
For those of you who are unfamiliar, here is the address:
Britannia Arms of Cupertino
1087 S De Anza Blvd
San Jose, CA
Just find your way onto Hwy 85. If you're on 85 south, exit De Anza Blvd and turn left, if you're on 85 north, exit De Anza Blvd and go right. The bar is on the left no more than about 1/2 mile down.
Try the Huevos Rancheros from the Breakfast menu or the Beer Battered Banger on the regular menu, bot are freaking delish. The stuffed mushrooms are great, too.