The Belmont Brewing Company is pretty sweet down by the Belmont Shore. And there is always Yard House right in downtown LB by the water. not a real big fan of those chain restaurants, but with 100+ beers on tap, you cant go wrong.
I lived in LB for about 8 months in 1998. Belmont Shores is pretty cool. If you like good food and want to go to a nice restaurant, look for Christies. It's owned by Sonny Bono's daughter. Great food and good wine list. Haven't been there in years, but would love to go back and eat there.