“Government Cheese” is a surrealist family comedy set in 1969 San Fernando Valley that tells the story of the Chambers, a quirky family pursuing lofty and seemingly impossible dreams, beautifully unfettered by the realities of the world. When Hampton Chambers is released from prison, his long-awaited family reunion doesn’t go quite as he’d planned. During his absence, Hampton’s wife, Astoria, and sons, Einstein, and Harrison, have formed an unconventional family unit, and Hampton’s return spins their world into chaos.