Sites Dedicated to Individual Pokémon

Rock On, Vulpix
Dedicated to Vulpix.
Link appears broken. Try this one.

Pikachu
Dedicated to Pikachu.

RaiZap.com
This site features a Raichu shrine.

Nyaasu no Kokoro (Meowth's heart)
Dedicated to Team Rocket's Meowth.
There's also a page on Misty's Togepi.