Energy » *Energy Cards In General
If a card gives off Energy of any type then that card COUNTS as an Energy card of that type. This means a Buzzap'd Electrode that was chosen to give 2 Grass Energy COUNTS as a Grass Energy Card and can be Energy Transferred by Venusaur's Pokémon Power.
Source: WotC Chat (2000-03-30)
Gameplay » Win States
If my opponent had 3 cards left in his deck and I used Wildfire to discard the three cards, on his/her next turn do I win?
Yup, you would, if someone cannot draw a card at the start of their turn like they are supposed to, they lose.
Source: WotC Chat (2000-03-09)
Trainers » *Trainers in General
When you use a Trainer card, first you pay the cost (if any), then you resolve the effect of the Trainer card, then you discard that Trainer card. So you could NOT use Item Finder to bring itself back from the discard pile (you would discard 2 other cards from your hand, then pull a Trainer card from your discard pile to your hand, THEN you would discard the Item Finder).
Source: WotC Chat (2000-03-02)
Gameplay » Win States
If I draw my last card. It is an Electric Energy so I use Raichu's Gigashock and it kills all of my opponents. Who wins?
You do, because you won't actually lose for being out of cards until the beginning of your next turn.
Source: WotC Chat (2000-02-24)
Gameplay » Special Conditions
My opponent attacks my Active, which causes 20 damage and Poisons it. Her turn is over. Do I then have to put 1 more damage [counter] on it because it is still Poisoned?
Yes.
Source: WotC Chat (2000-02-24)
Attacks » Smokescreen
If Magmar's Smokescreen Knocks Out the Defending Pokémon, does the new Active have to flip to see if its attack is effective?
No, it only effects the Defending Pokémon the attack was done against.
Source: WotC Chat (2000-02-24)