To get pikablue, pikabud, pikaflar, togepie, and professor oak (yes a wild one) you mustn't go on the S.S Ann, get all the pokemon, come back, go surf on the side until you find the truck, use strength to move it and youll find two pokeballs. One pokeball contains Mew (you fight it) and the other contains TM 52 called "Tombstone" which is a move only Mew can learn. You use it to get past those white blocks. If you use it near Pallet town youll find pikablue and stuff. Prof Oak knows Book throw, teach, faint attack and sweet kiss.
This one always bugged me: with a party consisting of Eevie and it's three evolutions, a Dragonite, and Mewtwo (all max level of course), Bill would take you behind his house to get Mew. I told my friends this when I first heard of it and one of them actually told me it was true xD
And yeah, lifting the truck with Strength... also another fave lol and one I just had to test with a gameshark >.<
My pal started this rumor that once you beat the game and filled the pokedex that Oak would give you a level one Charmander regardless of your starter, you had to get it to level 100 by any means but it had to stay a Charmander. If you succesfully did the task and returned the little guy to Oak he would open a gate to the field next to pallet where you could find and catch every pokemon at the time this was 151 plus togepy, a golden magikharp, pikaplu and a shadowy dragonite. There was also supposedly a large billboard that said "Welcome To Charmander Fields" and had a large photo of him. I still think it would be a pain in the ass to have 155 pokemon running around in the same damn spot...