TASing
What is a TAS?
TAS stands for "Tool-Assisted Speedrun". TASers will slow down the game in an emulator, and use savestates to push the game to its limits and make a theoretical "perfect" speedrun, or showcase interesting mechanics that can not be performed by humans. For more information about TASing, head to tasvideos.org
Super Mario Galaxy TASes
The Current TAS WIP for SMG1 Any% is being made by Xander and PurpleSun. Current progress for this TAS can be found here.
A seperate Any Luigi TAS is also in the works, being made by Toogs, and can be found here.
The current TAS WIP for SMG2 Any% is being made by Shadow64 and PurpleSun. Current progress for this TAS can be found here.
Along with full game TASes, there are many people trying to optimise Individual Level TASes. The fastest TAS ILs for SMG1 can be found here, and the fastest TAS ILs for SMG2 can be found here.
TAS Exclusive Tech
Buffered Crouch Acceleration
By Holding Z during a cutscene and releasing it 1 frame after control over Mario/Luigi is regained, a Long Jump can be performed 1 frame earlier due to increasing the initial acceleration.