See also: N'suck
Though they were highly overrated and initially came off as a manufactured marketing tool for the pop music industry, the group was actually quite talented. Although JC Chasez and Justin Timberlake were the only members of the group who could really sing, as a whole they were known for there elaborate dance coreography, harmonizing and since of humor. Part of their success as a boy band was that they recognized themselves as a boy band and didn't take themselves too seriously. Upon realizing that the popularity of generic pop music and boy bands in general was dying off by the 2000's (at least in the US) Justin Timberlake (the most talented all around member of the group) broke out of the group and went solo coming out with his own successful album. Timberlake sold out his bandmates and made a R&B type album and guest performing with rap groups.
Boy 1: N*Sync is a bunch of fags
Boy 2: I kind of like N*Sync
Boy 1: You're gay!