If you're looking for some inexpensive fun and happen to be in Alameda, you've got to check out the Shamrock Irish Pub, an easy local bar to always have a good time in. Everyone is friendly at Shamrock's and you can amuse yourself with pool, darts, or kick back and scope some international soccer matches on the tube. The drinks are inexpensive and strong; what else would you expect in an Irish bar? Also, on some nights, Shamrock's houses an unexpectedly awesome band.
This place is a GREAT place to have a few drinks and relax with friends. Easy to get to - just go through the tube and it's at the end. The bartenders make everyone feel welcome, and people can catch sports on the tellys, play darts, or play pool with the regulars. Some Friday nights, a few bands play. One of them is called "The Search" - definitely come when they play because they can get the crowd going with their humor and eclectic and energetic music - they rock the Shamrock.