In his third starring feature, Onionhead, Andy Griffith plays a character somewhere inbetween the bucolic ingenuousness of Will Stockdale in No Time for Sergeants and the hotheaded truculence of Lonesome Rhodes in A Face in the Crowd. Griffith is cast as Al Woods, a college student majoring in girls and parties. When his grades drop and his relationship with girlfiend Jo Hill (Erin O'Brien) sours, Al joins the Coast Guard as assistant cook on the SS Periwinkle, fully expecting to sit out WW2 in peace and quiet. Instead, he runs afoul of navy protocol in general and mess officer Red Wildoe (Walter Matthau) in particular. In or out of trouble, Al remains a stubborn individualist, and it is this quality that attracts him to Wildoe's erstwhile fiancee Stella (Felica Farr). Strong support is provided by Roscoe Karns as Al Woods' crusty father, James Gregory as the skipper of thePeriwinkle, and Joey Bishop is the inevitable Brooklynite.
~ Hal Erickson, All Movie Guide