This list does not include pokemon that were traded from others or pokemon that are supposed to be shiny (ie lake of rage garados, event pichu).  Nor does it include the shiny pokemon that I may have on games not listed.  If pokemon are listed twice, that means that I caught them in different ways.  If you want to know any more, just ask.  A few of these ARE up for trade. PS. Anybody want a nonshiny charmander?

Platinum
kricketot
voltorb (chain of 6)
gastrodon (chain of 2, random patch when resetting pokeradar)
shellos (west sea)
shellos (east sea)
machop (chain of 0, nonshiny patch)
beldum (chained)
buizel (chain of ll, IV calc said it doesn't exist, LOL)
slakoth*2 (chained)
roselia*2 (chained)
pichu*5 (chained)
gligar (chain of 12?)
nincada*4 (chained)
spoink (chained)
drifloon (soft reset)
larvitar*6 (long chain O.O)
slakoth (broke chain of other pokemon)
roselia (another chainbreaker)
kricketune (another chainbreaker)
machop (import from Sapphire)
ariados (nonshiny patch)
spoink (chain of ?)
skitty*5 (chained)
pinsir*4 (chained, first chain of 40)
budew*2 (chained)
shinx*3 (chained)
corsola*5 (chained)

SoulSilver
Latias (soft reset)
nincada (bug catching contest)
scyther (bug catching contest)
drowzee (truly random encounter)
sandshrew (game corner)
mr. mime (game corner)
skitty (traded from platinum)
shinx (traded from platinum)
yanma (random encounter)
porygon (game corner)
eevee*2 (game corner)
beedrill (bug catching contest)
kricketune (bug catching contest)

HeartGold
scyther (bug catching contest)

Sapphire
treecko (soft reset)
voltorb (soft reset)
zigzagoon (random encounter)
kecleon (soft reset)
spinda (random encounter)
castform (soft reset)

Current targets
unown (random encounter, soulsilver)
shieldon (masuda method)
abra (game corner) off and on
drifloon (soft reset)
? (random chain)
? (random encounter, sapphire)
anorith (3rd gen breeding, everstone doesn't work )
squirtle (soft reset) more off than on

Future targets
latios
rayquaza
ho-oh
regi trio
latias (sapphire, if I can)
mudkip

PPS. Sorry for being away for so long.