[youtube]http://www.youtube.com/watch?v=XEOsmMOc_BA[/youtube]

I’m all for finding weird stuff in Sonic games and GoldS/ORKAL’s compendium has easily been one of my favorite YouTube series of 2009.  He goes in-depth with how-tos and annotations to help you duplicate every glitch of every level yourself.  All the glitches are performed using the 2-player Sonic & Tails gameplay, mostly through Tails’ flying mechanic.  It begs the question, “did somebody test this game?!”

The embedded video above is the introduction to the series.  For the entire list of videos, check out the series’ YouTube playlist or, alternatively, use this handy list at Sonic Retro.