Randall Cunningham heard recently that 49ers quarterback Colin Kaepernick used to study his game film. That amused Cunningham, because his own son is now studying Kaepernick. "It's come full circle," Cunningham said with a laugh. Randall Cunningham Jr. isn't the only Kaepernick fan in the household. Dad likes him, too. The four-time Pro Bowl selection will be rooting for the quarterback this Sunday when the 49ers face the Atlanta Falcons in the NFC Championship Game.