Here is where I link to other sites that are worth checking out.
Hold contests for games on the Sega Mega Drive (Sega Genesis in the states)
Site of the best Genesis/Sega CD/Sega 32X emulator around.
Super Site for information on weirdness of the old Sonic games.
My friend owns the SA2 Glitches Guide; He is better at finding SA2 glitches than I am.
Click the link that says "Glitches FAQ" on the page you opened using the link above.