depending on what you looking for.. here are soem of what I recommend depending on type of food :

Arabic :
Bait Al-shami C-Ring road & Hawa Beirut opposite to it ..
Alsiwan at madinat khalifa for Mandi and kabsa

Turkey :
Turkey Central at Al-Nasir

Pasta :
Vanielly`s Yum Yum Tree at malls like city center, vilagio and hayat

Asian & Thai :
Thai restaurant at nasir street
Korean at C-Ring : try their tibinyaki
asian traditional near television-markhiya roundabout..

and offcourse my favorite is hardees :) ..

Enjoy your meal