Yaoi Gallery  (a pretty gallery featuring a potourri of artworks from various artists. 
Monica's Scans (a chock full of scans from Gundam Wing, Zetsuai and more...)
Yaoi Museum (with pics, videos and mp3's what are you waiting for???)
Zetsuai: Nanjou Kouji & Izumi Takuto (A great page for info on the Zetsuai manga)
 

Fan Fiction/Art and More...  

The Yaoi Slash Universe!  (your one and all guide to all things yaoi!) 
The Yaoi Fan-Fiction Archive (the ultimate archive of yaoi-related literature.. YUM..) 
The Rear-Attack Yaoi Gallery (Pluto's yaoi fanart page... who would have thought there were THAT many of us... BWAH-HAHAHAHHAHH....)
Passionate Kiss - Boy's Love (Yaoi/shonen-ai doujinshi)