Yakov Smirnoff is/was a standup comedian whose material was all Russian-related stuff... and that's where the "in Soviet Russia {y} {x}'s you!" comes from.
It's generally funny as a reference because it's a hilariously bad sort of eighties formula joke.
Although I can't neither read kyrillic nor speak Russian, I like www.ag.ru - great site for demos, patches and especially ingame screen captures. And yes, it's a legal site.
The only other Russian "entertainment portal" I've been looking into more than once was Wing Commander in Russia - still no clue what they're talking about, but very nice site design. I'm missing something like the biographies in the CIC - the encyclopedia is very good, but it doesn't tell the sources and doesn't have caharcter pictures. But it's just a minor gripe; sometimes I open WCiR in another window to look at a character picture I'm reading about in the CIC.