U2 - With or Without You
I wasn't overly crazy about this song when it first came out. For one, it was played non-stop, so I kind of had that "It's an okay song, but not great enough to warrant this kind of non-stop play" reaction, and for two, having been a big fan of the rockers by them that MTV played in the mid 80s, it seemed too tame. But over time, I grew to really love the song, especially once I got into the band in a big way. Over 25 years later, this is still a song that is literally impossible not to know. A younger friend at work a while back said she had no idea of the song when it somehow came up in a conversation, but when she heard it, she was like, "Oh yeah, I know that, but didn't know what it was called or who it was by."