From the PlanetXbox360.com feature article:
"Warthogs. Cortana. Needlers. The Pillar of Autumn. If you use these words out of context, they'll amount to nothing more than gibberish. But to Halo fans, it's a lifestyle. While Goldeneye 64 legitimized FPS games on consoles, Halo: Combat Evolved for the original Xbox solidified it. Despite the fact that Xbox Live wouldn't launch until exactly a year after Halo's release date, LAN play gave Halo the leg up it needed over Goldeneye: the ability to support more than four players, and thus, provided the opening for professional play on a much larger scale."