I remember the Go90 ads that looked exactly like the MTV "M" ad that ran in 1981. It was cool at the time but now it just looks dated.
As a Generation X-er I remember that as a betrayal, when a few years later the 60+ Sumner Redstone decided that we couldn't watch music videos anymore, MTV stopped showing music videos and became yet another whistlestop in a vast wasteland of reality television.