Native Girl ; A shrine to Samejima Mamimi by Shiena. it's always well-designed and worth a visit.
Deuxdei; Alexa of cherrycoma.net's FLCL site. amazing, as everything she does is.
NERV | FLCL; a fantabulous resource for anyone looking to make an FLCL site.
GAINAX - FLCL; GAINAX's official site. yey for obligatory linking.

those are all the [good] links i found. aie, the pickings for FLCL-ness on the web are slim .-.;