My favorite Pokemon is Psyduck. I dunno why, I just love it to death. It has so much personality and I love Misty's. Plus, I love it in my games. It's powerful, cute, and just so irresistable. I dunno... My second is Starmie who just seems so mystical and beautiful, plus it's powerful. Ninetales is also beautiful, and a great fighter. Ampharos and Breloom just real appeal to me in a special way. Absol is awesome. I love the concept of him and his feet ^^ Milotic is beautiful and Kecleon just rocks. Those are my top favorites.
I like Golduck as well, but when I list Pokemon I list the one in the line I prefer, but usually I just count all the Pokemon in the line there, instead of listing them all sepertaely.
My Top Twenty Five in order-
Psyduck
Starmie
Ninetales
Ampharos
Breloom
Absol
Milotic
Kecleon
Politoed
Jirachi
Dragonite
Nidorino
Butterfree
Dewgong
Mew
Bulbasaur
Ninjask
Forretress
Stantler
Arcanine
Dusclops
Meganium
Sneasel
Umbreon
Squirtle
I know it's a lot, but I couldn't leave anyone out ^^;