Then: Everyone can remember watching the little bowl-cut cherub (bottom left) race around the Camden house on the WB's "7th Heaven," but the actor actually got his break before that playing John Travolta and Kirstie Alley's son in 1993's "Look Who's Talking Now." From blonde chipper kid to moody dark teen, Gallagher left the show in the eighth season to pursue a college education full-time but returned here and there in the following two seasons.

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