GBA Sonic the Hedgehog: Genesis Video Walkthrough
This is a video walkthrough / playthrough / runthrough / etc of the Game Boy Advance port of Sonic the Hedgehog.
Simply put, this is a horrible port with lag and other problems here and there. Despite all of that, I go through the game and get all the Chaos Emeralds.
It should be fairly obvious while watching when the game mucks up.