Here we have Super Metroid completed in only 23 minutes and 45 seconds by its internal timer, with 22% items collected.
This is Cpadolf's second attempt at this run category, saving 19.37 seconds over the previous one thanks to improved ammo/energy management and better optimization all around.
Note: This movie aims for in-game time, making use of the fact that the internal timer is stopped during certain events. However, some insignificant sacrifices, such as not using the murder beam, were made in order to keep high entertainment level throughout.
If you prefer watching a realtime-oriented movie of Super Metroid any%, check the 38:41 version by Taco & Kriole.