So that's where it came from.

And Chocolate Rain.

"Cherry Chocolate Rain" commercial for Cherry Pepsi is one that comes to mind.

As for the Rick Astley example, Thanksgiving Parade '08. I was in the middle of playing MapleStory while watching the parade, and then I hear this weird song playing off a Fosters' Home for Imaginary Friends parade float. Then, when I hear the awkward silence, I was wondering what the hell was going on and see everything just stopped on that float. Then: Rick Astley popped out. Because my parents have heard me playing this song at uber volume off the computer because I think it's awesome, they were trying to tell me Rick Astley popped up on screen even though I was watching already.

My parents think I love the guy's stuff so much and got me his entire "Whenever You Need Somebody" album for Christmas that year despite the fact it was just a meme that really stuck with me because I liked that one song. The three best songs on that album ALL sound alike: "Whenever You Need Somebody", "Never Gonna Give You Up", and "Together Forever". The rest is kinda.... eh.

[video=youtube;AQIeTjUbqFI]http://www.youtube.com/watch?v=AQIeTjUbqFI[/video]
^ Oh, and Jesus Christ, I was so amazed this song was from the 90's. Sounds like something bad that came out of the 80's.