I only recently got into it. And I got REALLY into it. Mostly because I love the Universal Century and the model kits.
Only completely watched original Gundam, Char's Counterattack, SEED, Build Fighters, and Unicorn so far. But I plan on watching most (if not all) series.
I currently own HG Banshee and Rozen Zulu, RG Char's Zaku and Freedom, and the gorgeous PG Unicorn.