Mines a no brainer...Dragonite Ex.
Got 1 Ex pack back in those days that they were new to see what the cards were like...and I got it.
Only 1 pack...lol

I have no other Ex or (Star) cards, so I value that one highly.
Unfortunatly, I can't use it...with an absence of Dragonairs in my collection... -_-

My sister loves her Celibi card.

I have a few non-promotional ex and Lv. X cards. According to a monthly pricing guide, a few are worth about $20-30.

My giant Darkrai card

I USED to have a Lugia EX from a random pack or something, but I traded it to my friend and when I wanted it back, he said I'd have to give his plushie back. ;^;

A Flygon ex or a Honchkrow C LV X or electric/steel Charizard!

Notch-eared Pichu-M
(a promotional card recieved in packs from theatrical showings of the Arceus movie)
(DSi post test)

I just got two Charizard Lv. X's the other day out of pure luck.

My older brother's prized possession is his '99 Charizard Card. It has 120 HP, can deal 100 damage Fire Spin with 4 fire energies, and has the Energy Burn Pokemon Power, which says: As often as you like during your turn (before you attack), you may turn all Energy attached to Charizard into Fire Energy for the rest of the turn. This power can't be used if Charizard is Asleep, Confused, or Paralyzed. At level 76, with the rareness of a star, it ' Spits fire hot enough to melt boulders. Known to unintentionally cause forest fires.' This card is cool. <that was a period
http://archives.bulbagarden.net/media/u ... d-Base.jpg

I think my most valuable card is my first edition Machamp that I got for 50 cents.

my favorite card would be my MEGA dialga card. (i don't mean mega as in powerful i mean mega like 10x bigger than the original dialga card .although, i would also like a powerful dialga card.

I have a first season holo Charizard. I know its not the greatest, but I like it, because it's my fav Pokemon.

Mine is an Electric/Steel Charizard. Holofoil! Easily $125.00!

My favorite card would probably be my Dragonite EX or my Shining Tyranitar. I'm not sure what my most valuable card would be though

I don't know what mine is. Hold on a sec... *Goes into room to look through binders*
Uhh... Okay, I think I'm going to narrow it down to five. Holographic Neo Destiny ???????? / Dark Typhlosion, Holographic Neo Revelations ???? / Raikou, (TCG game) Promo Meowth (I have two of those), Base Set Charizard, and I'd have to say my Ancient Mew. The cards I have in Japanese I have in both Japanese and English. I don't know what my most valuable is.

My Volkener's luxray, my Cyrus' Dialga (got in a pack) and my Ancient Mew.

I've gained a few legendary's collecting pokemon cards, but my favourite has to be my groudon ex.

I know you can't use it but my friend has an ancient mew.

All this talk about Ancient Mew. One of the fellow members of the league I participate in has an unopened Ancient Mew in absolutely perfect condition! I may try to get pics tomorrow and upload them.

Hmmm... Maybe my 3 Japanese Mews from the old fossil packs.

Pokemon Heroes cards only included with the movie.
I found it WITH the movie, in good shape, still in the envelope. At a antique store.
I don't care much for it, so maybe I could make some monies off of it. I don't usually sell cards.

It's Ancient Mew card. If I remember right it was given away with the second movie.

Yea, That's ancient Mew.
I got one of those.

Now that I have more cards (newer ones) I'd like to give a full list of Valuable cards I own:

Dragonite ex
Gengar Lv. X
Arceus (normal type)
Arceus (Fire type) X2
Arceus (electric type)
Arceus Lv. X
Tangrowth Lv. X
Electric/Steel Pidgeot
Fire/Steel Mewtwo
Dark/Steel Umbreon