Yeah, coming from a person who has a good ear for music...I do get sort of irritated when people don't know that a particular song has been sampled from.
One that wasn't mentioned yet was Kanye Wests song "Good Life". He sampled PYT like nobody's business.
But I can also say that I have been on the other side of the spectrum as well. Just only a couple of years ago I was only a fan of Michael's popular smashes. I didn't care to look up any more of his music yet.
I was watching music videos and I saw a song that caught me completely off guard. I loved this song, and I had never heard of it before. It was SWV's "Love Will Be Right Here". I listened to that song EVERYDAY!!!!! I was sooo in love with that rhythm and the chord progressions. And I didn't know where that whiny "whyyyyyyy" voice was coming from, but that I loved it.
Then when I finally listened to "Human Nature" for the first time........well it obviously clicked! I was like, "Holy sh*t.......that's the melody of that song I absolutely adore!!"
I had no idea.