<Li> Adam Sandler as Donald "Donny" Berger . <Ul> <Li> Justin Weaver as 1984 Donny Berger </Li> <Li> Ian Ziering as TV Donny </Li> </Ul> </Li> <Ul> <Li> Justin Weaver as 1984 Donny Berger </Li> <Li> Ian Ziering as TV Donny </Li> </Ul> <Li> Justin Weaver as 1984 Donny Berger </Li> <Li> Ian Ziering as TV Donny </Li>

Who plays young donny in that's my boy