The Gamecube got me back into console gaming.

After skipping most of the console gaming scene from 1999 - 2002 (PC only during that stretch), I saw video footage of Zelda: Wind Waker in early 2003. I immediately went down to Best Buy and bought an Indigo Super Mario Sunshine Bundle + Rogue Squadron 2 + Resident Evil 0. I preordered Wind Waker (with the free OOT disc) a few weeks later. Been steadily gaming on consoles ever since. It was my only modern console for a good year and a half. Love that little purple box. Still have it hooked up too.