I thought it would be a good idea to list the Japanese version Pokémon glitches that were removed in the English versions. Know any more?
Edit: Oops, I didn't include Generation III and later glitches.
Red & Green only:
*Opening the Pokémon menu with no Pokémon via a Potion.
*Select button glitch within Pokémon battle (v1.0 only).
*Saffron Gym glitch (when you lose to Sabrina you get the badge when you return).
*Surf from a cliff.
*Uncertain: Do glitches like those caused by viewing type 20h occur in other versions?
*Uncertain: Is there an item effect in other versions like v1.0's Gold Badge that causes the Yami Shop glitch?
Red, Green and Blue:
*Select button glitch (still works when you use select outside of battle).
*Removing objects with the Card Key.
*Old man full party and box glitch (he can't catch the Weedle because your box is full).
*Swapping lift options.
*Seafoam Islands text box glitches.
*Magikarp salesman glitch.
Pocket Monsters Pikachu:
*Uncertain: Does the glitch caused by viewing FF's status happen in other versions?
Small list of select button glitches:
*Partial switch glitch (swapping valid party members within battle), v1.0 of Red/Green only.
*Dokokashira door glitch.
*Fossil conversion glitch.
*Alternative walk through walls glitch.
*Warp by Nidoran♂.
*Get a Yami Shop glitch item (14th cursor position with 2nd).
*Second type glitch (e.g. Water Pokémon into Mew).
*Make your own items glitch.
*Skip to level 100.
*Number of items = defense exp byte 2 (D141): 9th cursor position with 1st.
*Get any move (swap data in 9th cursor position with any move in battle. Move depends on current exp byte 3.)
Japanese Pokémon Gold/Silver:
*Bug-Catching Contest data copy glitch (v1.0.)
:SatoMew2 said it doesn't work in rev A, but I haven't tested it in both versions yet.