Smogon has revolutionized Pokemon for me with their RNG manipulation research, and their generosity in sharing this knowledge with the public. Even with my huge collection of competitive Pokemon, I'm always seeking a more challenging project. I do abide by one rule: never use roms/hacks to obtain projects.
My best experience in Pokemon was the successful result of a painful month-long ordeal capturing a shiny jolly pentaflawless Metang in SoulSilver's Safari Zone. With a catch rate of 3, fleeing, and inability to inflict damage, I was retail abusing the same seed infinitely to succeed at this impossible project.
Capture projects are more valuable than breeding projects.