Here are some links to BGC pages that I find particularly interesting for one reason or another.

The Bubblegum Crash! Website
Bubblegum Crisis
BGC/BGC!/AD. Police Synopses
TokyoNet
The Naughty Bubblegum Homepage (hentai site)
Raven's Garage
Posie-chan's BGC Fanfic Mailing List
The Unofficial BGC Website
The Unofficial 'New BGC' Website
The Bubblegum Crisis Art Gallery
The Sylia Stingray Image Archive
The Priss/Nene Picture Archives
The Ultimate BGC Link Archive
BGC Info and Review Site
The Disgruntled Fan's BGC Page
Sylia Stingray's Page of Bubblegum Stuff
The Bubblegum Crisis Fanfiction Guide
The Shrine to Sylia Stingray and Largo
The Knight Sabers' Gallery
Anipike: Bubblegum Crisis Links
Bubblegum Crisis Links of Links
Sentient Boomers: BGC's Tragic Figures
Sylia Stingray's Homepage
The Sylia Stingray Worship Center
Le Sanctuaire de Sylia Stingray
The Shrine to Priss Asagiri
The Priss Worship Center
The Priss-chan Shrine
The Linna Yamazaki Shrine
The Temple of the Mountain Headlands
The Nene-chan Shrine
Bootastic Nene Shrine
The Many Faces of Nene Romanova
The Shrine to Largo/Mason
The Leon McNichol Shrine
The Temple of Anri-chan