Chess trivia question - winner gets a trophy!

Greetings fellow Unorthodox Openings-ians!

In the position given in the image, white is to play.

The position given is from a famous game played in 1998. Your goal is to tell me who played white and who played black, along with the double-exclam (!!) move that white played (this is his 23rd move).

Winner gets a trophy! If you don't know, feel free to guess - if someone guesses one of the players correctly, I'll tell you the other player.