It is "In Da Club" by 50 Cent
The Chiffons song He's So Fine was number one on the Billboard magazine's chart from March 24 to April 20 1963.
The song "Laffy Taffy" was released by Atlanta based hip hop group D4L. It reached number 1 on the Billboard Hot 100 chart in January 2006. The lyrics to the song can be found at Metro Lyrics, Rap Genius and Lyrics Mania.
SOS
The first number one single on the Billboard Hot 100 chart in the 1990s was "Another Day in Paradise" by Phil Collins. It reached the number one spot on January 6th, 1990.
"Rapper's Delight"
Yes! It was number one in fact!
Complicated climbed to number one on the US Billboard pop music chart. The song also reached number one on the Canadian Singles Chart and the European Hot 100.
The first song by The Beatles to reach number one in the UK chart is 'I want to hold your hand'.
Rock with you By Micheal Jackson
The song "Two Hearts" by Phil Collins was very popular in the late 1980's. In February of 1989, "Two Hearts" reached number one in both the United States and Canada. It was once number one on the Canadian Singles Chart and number one on both the U.S. Billboard Hot 100 list and the U.S. Hot Adult Contemporary Tracks list in 1989. The song was released in November of 1988.
When a song hits a chart in one format, then hits a chart in another, it is usually called a crossover. Songs typically cross over from a specialized format to "pop," but they can cross between or among formats. Pumped Up Kicks by Foster the People was a number one rock song in June, 2011. It hit number one on the pop chart in October. So, Pumped Up Kicks would be a rock-to-pop crossover.
Baby Baby - Amy Grant
Two weeks
"Soak Up the Sun" by Sheryl Crow was released in March 2002. In the USA, the song hit number one on the Billboard Adult Top 40 chart. In the UK, the song reached number sixteen on the UK Singles Chart.
You are Not Alone-1995
Iggy Azalea's song: "Fancy" is at number one right now.
The number one song on January 10, 2012 was "Sexy and I Know It" by LMFAO.