I'm happy to see other people with fond memories. Underrated by way too many, and dismissed because of its 'unrealistic' graphics.
Single player was good (albeit the plot went out the window), but multiplayer was in a class of its own. I only ever once managed to get 4 people together to play on the same console, but man was it worth it. So much customisation, about 15 maps, 12 modes, 20 weapons. What's not to like about hurling bricks at each other while playing virus in the Nightclub?
I hope Crytek UK is still making number 4. It'd be a massive shame if it was ditched. Just imagine how awesome the map maker could be alone.