When I got this for Christmas in 1999 along with Half-Life, I didn't even know what it was.
When I got home two days later and installed it, my family wouldnt have access to our computer again.
I used to trade off every 5 deaths or 20 kills with my little brother until the late hours of the night. When I would get in trouble, TFC would be taken away, and I would have to go outside and play. I can still remember my best friends names, though I doubt they still play it. I can even still remember my favorite medic. I remember mulching until I could finally kick the ♥♥♥♥ out of anyone (this was before stat tracking, though I would assume the hours would be in the thousands.) VIP, Climb, and Jump maps were perfect to kill time and be silly with all your friends.
Though I havent played since TF2 came out, I miss this game more than anything ever. Definitely the fondest memory I have as a child. This game made me fall in love with Sierra (VALVE), and to know what real FPS's should be like.
I have purchased this game three times after the initial gift, to install on friends and girlfriends computers so that I could play at their houses.
Buy this even if it's just to have it in your collection and you never play it. At least you can say that you have it and pretend that you are OG.
I love you TFC.