I think of the decade of development hell the game went through, the promises, the ads, the dreams, the realism it could have portrayed... I think back to Half-life: Counter-strike and Blue Shift... I think back to Half-Life 2 and the praise it received - and TF2 was still just whispers in the mists...
Oh, and the PC Gamer article back in February (2001?) that described the crew's tactics when playing Team Fortress Classic 'The Hunted' around the office.
"Oh my God!... DOT! DOT!!! I'M BEING SNIPED!!!"