You, I mean we (outside of Russia and Eastern Europe I assume) don't really hear anything about Russian food.
This is your time to shine. Impress me.
Oy.. I'm not sure if I'll impress you, but will mention a couple of plates maybe
So, right now (during hot weather), I prefer cold soups: okroshka and svekolnik. Some variants of svekolnik exist also in other Slavic cuisines (in Poland for example).
Okroshka can be prepared on kvass and kefir, I love both but as a fan of kvass, I usually tend to cook the second variant (when I can find kvass in Poland, of course).
en.m.wikipedia.org
I didn't find a Wikipedia article in English for svekolnik, only for "cold borsh" that is variant of Polish chłodnik. These are all different types of svekolnik I'd say, a cold soup made with beetroots ("svekla" is a beetroot in Russian) and on kvass/kefir as well (in Russia it's usually kvass, in Lithuania and Poland they often use kefir).
There's a paragraph dedicated to "cold borsh" in this article:
en.m.wikipedia.org
I don't like borsh by the way, but also eat it from time to time (but there are lots of types of borsh as well, in different countries they cook it in a different way).
My favourite dishes are also:
Draniki (you call it Potato pancakes) - it's mostly a Belarusian dish, but is also incredibly popular in Russia, Ukraine (they call it "deruni" there), Poland (they call it "placki ziemniaczany"). I don't like how Poles cook it, but I love a Belarusian/Russian/Ukrainian receipt.
en.m.wikipedia.org
Syrniki or Tvorozhniki
en.m.wikipedia.org
Rasstegai/kulebyaka and other types of Russian pirog (don't confuse it with Polish word "pierogi" that is used for another dish)
en.m.wikipedia.org
en.m.wikipedia.org
Pelmeni of course
en.m.wikipedia.org
Vareniki (or "pierogi" as they call it in Poland). It's rather a Ukrainian food, but there's a receipt they call "Russian pierogi" here in Poland
en.m.wikipedia.org
There are also lots of tasty salads such as:
"Selyodka pod shuboy" (that literally means "herring under a fur coat" ) or dressed herring - that's rather a Soviet food
en.m.wikipedia.org
"Olivier" - a salad that we (in ex-Soviet countries) cook often as a New Year's Eve dish. (They cook it in Poland as well,a bit different,but I don't like their receipts). It's also rather a Soviet food,but you often call it "Russian salad"
I like eating it during summer,not only for New Year's Eve
en.m.wikipedia.org
There are lots of other dishes,of course, these are the most known in Western countries I think