ESPN

1st Presentation (1998-2003)
Visuals: The ESPN logo at the time ("ESPN" in its familiar font, but on an oval with a line on the top-left of it) forms, then it zooms back to reveal the now previous NFL logo floating around in space.

Technique: The ESPN logo forming.

Audio: The NFL's old fanfare. Since 2003, the now-current NFL fanfare is used.

Availability: Should still be intact when ESPN Classic airs an NFL presentation from the late '90s and early 2000s.

2nd Presentation (2006-2019)
Unknown.

3rd Presentation (September 9, 2019-)
Visuals: In a dark gray background, we see dark gray liquid chrome form the NFL 100 logo. Finally the camera backs away as it fully forms and colorizes to, white and. It cuts to the famous Hank Williams "Are you ready for some football" intro.

Technique: The liquid chrome forming the NFL 100 logo and the logo changing color.

Audio: The current NFL fanfare.

Availability: It is currently seen before and after MNF games on ESPN.