Howcast

(December 19, 2007-)
Logo: We see the H of the logo flip through various different symbols, the Howcast logo in blue appears after this

Variant: Starting in 2010, the logo was enhanced, and "original" was added below.

Technique: 2D animation.

Audio: A basic drumbeat, 2 notes play when the logo is revealed

Availability: Seen on YouTube videos from the channel. The animation can be seen here.