Yo Gabba Gabba has the power to unite the under-six set with square parents, breeding hipsters and childless stoners. The TV tunes walk the thin line between being freakishly catchy and frankly wonderful, and the guest artists really kick the quality up a notch. We give top honors to MGMT's reading of "Art Is Everywhere" and Hot Hot Heat's "Time To Go Outdoors," which makes such a strong case for fresh air and greenery that it may even get bedbound curmudgeons picking flowers in city parks across the land.