Vadim Gerasimov was a co-creator of Tetris. You don't hear as much about him as you do Alexey Pajitnov, but he was interviewed last year. (He hasn't talked to Pajitnov in 25 years!) You can learn even more about him on his website (though it hasn't been updated in a while).
Did you know Gerasimov created another puzzle game that only came out for PlayStation in Japan? In Vadims (three guesses where that name came from), you clear blocks by forming diamond patterns. Seems like a cross between...I don't know...Lumines and that terrible Pyramid game by Sachen.
Vadims was developed by Metro, the Bust A Move/Bust A Groove people.