Tobuscus

Background
Tobuscus was launched on YouTube on May 14, 2006 by Toby Turner. The channel is known for its sketches, animated music videos and literal trailers. They also have two other channels named TobyTurner, which is known for daily unedited vlogs called LazyVlogs, and TobyGames, which is known for its Let's Play videos.

Logo (June 26, 2009-)
Visuals: On a concrete-like background, the company name in a  blocky font with a texture zooms out from the center of the screen, as the screen slightly shakes. After a few seconds, two metal doors close from opposite sides, causing sparks to emit out. Then, it opens again, transitioning to the start of the video.

Technique: Possibly After Effects-like animation.

Audio: A whoosh, followed by Toby saying the company name in a deep voice, then some metal sounds from the doors and ending with another whoosh when it opens.

Availability: Debuted on Michael Jackson Died! and can be seen on a majority of videos produced by the channel, although they usually tend to omit this intro in most cases.