So what is the HBJ of D00M? Ideas: (NOTE:Some of them might be impossible!)
Kraid: HBJ over the Zipline after beating Kraid after killing the Rios. Do it infinite times (->change direction on the walls)
Kraid: Zipline Missile room. HBJ across it infinite times.
Kraid:Room before Save point near Kraid. Hbj infinite times.
Chozodia: HBJ capo327 mentioned.
Ridley: HBJ through the Sidehopper room. Infinite times.
Ridley: In the one long room,kill these "two enemies which don't look like a ball" and HBJ through Infinite times. Most likley impossible though. I would like to see that.
You can just paste the url into the reply window. Or, if you want the link to appear as text, write the text, then highlight it and click the URL button. You'll get this: