Hehe, I name a lot of them. In Gold and Sapphire, I forced myself to nickname every capture pokemon. Nowadays, I only nickname my team, shinies, legendaries, other favorites, and such. I have random inspirations but most of the time, my nicknames match. I'll only list the interesting ones here, as a lot are human names. YES, I have more than this. XD
Blastoise: Blue/Beachball
Charizard: Red
Venusaur: Green
Sceptile: Scarlet
Blaziken: Blaze/Esperanza
Staraptor: Stella/Astro
Raichu: Rosemary
Clefable: Fables/Cassandra
Swellow: Scooter
Mewtwo: Psycho/Mayhem
Garchomp: Tornado/Acaelle
Zangoose: Zolo/Rogue
Ninetales: Noel/Vanilla
Rayquaza: Razor
Kyogre: Khaos
Groudon: Galax
Heatran: Damien
Cresselia: Chrys
Mesprit: Melody
Palkia: Precious
Manaphy: Marina
Latias: Lilac
Latios: Aeoriusze
Absol: Twilight
Corsola: Crystal
Rapidash: Phantasm
Luxray: Sparxia
Venomoth: Villetta
Delcatty: Skittles
Lopunny: Fernandina
Lugia: Angel
Ho-oh: Demon
Miltank: Bluebell
Froslass: Tundra
Flygon: Sybil
Bellossom: Aezel
Lanturn: Luna
Altaria: Sunshine
Pidgeot: Zephyr
Donphan: Roxxane
Lunatone: Safyre
Gallade: Blitz
Gardevoir: Rani
Tyranitar: Lexus/Mercedes
Kingler: Kai
Beedrill: Kryptonite
Jumpluff: Hollie
Togekiss: Trinity
Manectric: Elektra
Ampharos: Mirabelle
Camerupt: Obsidian
Honchkrow: Midnight
Magmortar: Meteor
Furret: Sugar/Spice
Rhyperior: Rochelle
Purugly: Amethyst
Houndoom: Hershey/Savage
Vaporeon: Bubbles/Violet
Flareon: Faith/Rose
Jolteon: Jules/Juniper
Glaceon: Anemone
Leafeon: Lily
Espeon: Sunshine/Saffron
Umbreon: Shadow/Iris
Skarmory: Metallix
Aerodactyl: Artemis
Starmie: Selena
Infernape: Vulcan
Electivire: Xavier
Yanmega: Renegade
Salamence: Basilisk
Sharpedo: Knights