WOW.. You must really like Halo..lol
I do. It's funny because Halo 3 was the first Halo game I played and I didn't like it much at first. The more I played it, the more I liked it and realized that Bungie is probably the best developer in the industry. Their dedication to the Halo Community is amazing.
After playing Halo 3, and then playing other games, it left me begging for features that they didn't have but were in Halo 3 (Theater, Forge, regular playlist updates, double EXP almost every weekend, unmatched stat-tracking).
I eventually played Halo: CE and Halo 2, but Halo 3 had me hooked.
Sidenote: Major Nelson announced Halo: Reach had sales of about $200 million first day. Bungie deserves every dollar they make for the quality games they produce.