Try Billy Chus at adelaide airport, like wok in a box but the thai chicken curry is fantastic most days.
Yiros - Savvas yiros on unley rd, or the falafel house on hindly for a late night feed
Anything on Gouger st is good, lots of chinese, japanese, malaysian, italian, argentinian etc but look out for little river korean, you get a hot plate in the middle of the table and cook up you own all you can eat meats, veges etc, Theres also Gouchos, the steaks are 600 to 800 gramers and cooked perfectly