Great place for happy hour
I enjoyed Callahans, even though its more of an American Irish where they try to fuse the local food and culture in Irish favorites. As an example they have the California Irish Burrito, which is grilled carne asada, pub chips, guacamole and cheese all wrapped up in a flour tortilla. Served with lemon cilantro rice and refried beans topped with cheese. The Irish part of it is the pub chips, I believe.
But overall the food is good, the service great and the prices very reasonable. Its a big place so there's more than enough room for a big party of people getting together for happy hour or to watch a game.