One of my favourites was the Steckerfisch, which quite literally translates to fish on stick. It's a whole fish usually river trout or mackerel. It's a Bavarian favourite where they impale a fish and proceed to slowly BBQ the fish over hot coals; it served with a slice of lemon and some herbed butter.....so tasty!!! Next time you have a BBQ make sure you try impaling your fish and cook it in a similar manner.
When you visit the Wiesn you will most likely have the much touted Oktoberfest roast chicken. Upon eating roast chicken anywhere in world with your new Bavarian travel buddies (you will meet plenty), he/she will definitely tell you "that roast chicken is no where near as good as the one from the Oktoberfest". After tasting the roast chicken in Munich, I have to admit it is pretty damn good here.