A few recent ones:
Luke Barmby (Central) - Salisbury Heights Primary/Salisbury East High.
Ben Nason (Central/Richmond) - Salisbury High
Cleve Hughes (Norwood/Richmond) - Birdwood High. I remember playing a 3rd round Year 8/9 knockout game against Birdwood at Kersbrook in the pouring rain, he kicked nine and marked everything without even trying.
Steven Eichner (Port) went to Keller Rd Primary at Salisbury East before going to Trinity College.
Brayden O'Hara (Central) was a Trinity boy as well I think.
Travis Varcoe (Central/Geelong) went to Smithfield Plains High, which will be no more after 2010.
I did the same primary/high double as Adelaide United captain Travis Dodd, Salisbury Park Primary/Salisbury East High.