Berlin:
Matjes - raw marinated herring.
Bismarckhering - raw marinated herring.
Sylter Royal Austern - oysters from Sylt (north sea island).
Mett - raw pork.
Flusskrebse - crayfish.
Havelzander - pike perch from the Havel river.
Reh - small deer.
Hirsch - deer.
Hase - hare.
Wildschwein - wild boar.
Kaninchen - rabbit.
Ente - duck.

Some restaurant recommendations:

- Mark Brandenburg (in the Hilton Hotel, Gendarmenmarkt): specializes in refined regional cuisine.

- Diekmann (one location in Meinekestraße off Ku'damm, one location at Potsdamer Platz)

- Fischers Fritz (in the Regent Hotel, Gendarmenmarkt): Gourmet cuisine (two Michelin stars!!!). Lunch is a bargain. You can enjoy high-level cuisine starting from 18 Euros! (dress accordingly, it is a very elegant place)

Wien:
Tafelspitz - boiled beef, served with horseradish
Wienerschnitzel - veal steak, large and thin and coated with breadcrumbs, sprinkle with lemon juice
Heavenly desserts:
Topfenpalatschinken - pancakes filled with curd
Marillenknödel - curd dumplings filled with apricot
Salzburger Nockerln - egg foam
Mohr im Hemd - warm chocolate cake with whipped cream and chocolate sauce

Torte is eaten in the afternoon in a Kaffeehaus. Very typical for Wien.

Some restaurant recommendations:

- Plachutta (two locations): This is the VERY best place to eat Tafelspitz. It is served as a menu, with soup, marrow and meat.

- Kaffehäuser:
- Demel: most elegant and expensive
- Diglas: more intellectual, very popular among the natives

Guten Appetit!

And Gammelfleisch is very tasty in Germany.

haha...about the steak, yes, argentina has great meat. i wont say im a vegetarian (because i eat fish and poultry) but im not much of a meat eater... in spanish we have a saying "en casa de herrero, cuchillo de palo", which means something like using a wood knife in a locksmith´s house.
about the type of food, ira, we would like to try everything/anything, but we have a budget problem since argentinian peso is devalued compared to the euro or dollar, so we have to keep the trip cheap, but that doesnt mean that we wont spend a little more sometimes.
about the period of time, it is 22 days. we are spending 3 days in each city, except for paris (5), bruges (1), brussels (1). i know its tight but we dont know how long will it take us to save the money again (argentinan peso is 3 to 1 compared to the dollar).
for the rest, thank you all for your information... i didnt think i would get sooo many responses, i am writing all down and i sure ill have comments when i get back... i cant wait, some of these things sound delicious!
gracias a todos (thank you all)!

Paris - Berthillon Ice Cream

Paris: the wine...all of it! Oh, and try the street markets on Thursday and Saturday for an inexpensive way to sample and savor just about any type of food the Parisians take home.