A few minor glitches that do not need their own page will be described in little detail over here:

1. The Evolving Raichu Glitch (RBY): First, trade a Raichu to the guy in Cinnabar who wants a Raichu for an Electrode. You will get an Electrode named Doris, but that's not important, what is important is what comes out of his uneducated pie-hole:

2. The Man-on-the-Roof Glitch (RB): Surf on Cinnabar, then get off next to the door of the Gym. You must NOT have the key for this to work. Go left, until you get a message saying that the door is locked. For a split second, a man will be on the roof of the gym (NOTE: According to the PokeGlitch site, there is more than 1 variation of this trick). 

3. Ditto's Secret Move (RB): Get a Ditto, and Transform into a Pokemon with it. Then, use the Select Button to switch two of the moves. When the battle's over, Ditto's Transform will be replaced with a nameless "Cooltrainer" type move. I have to warn you, though. You can only restore this move's PP with Ethers (Elixirs don't work.) Plus, toying around with Glitch moves (like the Cooltrainer one) can give nasty effects. At worst, the enemy Pokemon will suddenly become burned and will faint soon, but will freeze your game. Sometimes, it hits, and it looks like Earthquake. I cannot verify whether this is actually a move you'd want on your Ditto, though. (This was fixed in Yellow version.) Thanks to Pokeglitch for this one.

4. Garbled Hall of Fame (RB): If you run into a MissingNO or 'M, your Hall of Fame will be scrambled. The only beneficial effect of this glitch is that you get an opportunity to copy the starting moves of one of the random Pokemon with a Ghost/Skeleton MissingNO.

5. Ditto Transformation (RBY): If a Pokemon other than Ditto uses Transform, that Pokemon will transform into a Ditto when it is caught! To do this, do one of the following: 1. Use a gameshark code to get Mew. Make sure it knows Transform, and once Mew transforms, it will become Ditto when caught! 2. Get a Ditto, then use it against Spearow or Fearow. Transform Ditto into the enemy Pokemon, and then once it uses Mirror Move, catch it. It will be a Ditto. 3. See Ditto in the Hall of Fame, or use a Ditto last in a battle, or put Ditto in the last position in your party. Then, fight a Ghost/Skeleton MissingNO. Once it uses Transform, catch it. It will be a (high-leveled) Ditto. 4. Catch an 'M. Then, once you catch it, catch it again (it will still be in battle.) You will have caught a Ditto! Thanks to Pokeglitch for this one.

6. "Cool Move" (RS): Use a gameshark code to catch one of the variations of ??????????. Then, feed it some Pokeblocks and put it into a Contest. Most of its moves will be called "-", but one of its moves will be called "Cool Move." When you use Cool Move, you get a lot of red hearts (appeal), but you cannot appeal again in that contest. When the contest is over, your game will be glitched. (Using "-" will give you 4 red appeal hearts, and you can use it over and over (The screen will say "?????????? hasn't made its appeal".) No glitchy effects, aside from the "hasn't made its appeal" thing, will happen.) Mine made it to the Hyper Rank. (It might have a variety of unglitched moves, but if you scroll down too much, the game will glitch.)

7. Surf On Lance's Statues (RB): When you get to Lance in the Elite Four, you can surf on the statues in his room. This also works with the statues in the gyms. Thanks to Pokeglitch for this one, sorta.