The Holding Company, 1841 5th Ave, San Diego. June 11th. $5 suggested donation. Nerd Nite San Diego returns for the June edition — three talks, one bar, and the format that guarantees you leave knowing something you didn't know when you walked in. The June edition of Nerd Nite brings the same structure that has made the monthly a fixture in the San Diego intellectual social calendar: speakers who care deeply about a subject you've probably never thought about, given twenty minutes to make the room care too. The subjects change every month. The common thread is enthusiasm — the specific kind that makes someone get up in front of …