By popular request, here is the complete collection of GBA events off the database that were not generated artificialy. Based on the standardized definitions of legit and legal, these pokemon are not legit! All of them were cloned at one point, and are therefore legal. However, in the case of event pokemon (and event pokemon only) these pokemon may be more desirable because they are indeed perfect replicas of a pokemon that was given at a Nintendo event at one time. Obviously no one has a list of PIDs that nintendo gave out, but I know it makes a lot of you feel better to know that these pokemon were not generated with a PID that possibly never existed due to the limited number of pokemon given out.

I've also taken this opporunity to give proper credits where they are due, the following people have been a huge help in filling up the GBA Event DB:

Event-Pkmn- several 10 ANIVs and 10 ANNIVs, Pokemon Box pokemon, Pokepark pokemon, PokeCenter japan pokemon, Tanabata Jirachis, Aura mew, ANA pikachu, GW pikachu, Festa metang, Mitsurin Celebi, Sunday pikachu, Batoruyama ho-oh, Koroshiamu pikachu, eReader togepi (WOW!)
fenzo666- PCNYs and JEREMYs, japanese glitch fix zigzagoons, Negai Boshi jirachi, Sunday wobuffet, MATTLE ho-oh
Poryhack- several 10 ANIVs, GBA ticket events, MYSTRY mew, ROCKS metang, WISHMKR jirachi, SPACE C deoxys
Koj- Hadou pokemon
coreycubed- RUBY & SAPHIRE zigzagoons
Loving Emodisc- Ageto celebi

Enjoy the PKMs! -Poryhack