This broke the AOL (you bought the internet from them on CDs... it was a strange time). Lawsuits were filed. Janet Jackson was virtually blacklisted (hard to say why?). In 2006, the Guinness Book of World Records named Nipplegate the "most searched item in Internet history." That fraction of a second is probably the most scrutinized footage since the moon-landing.
In an interview during halftime on NBC's "Sunday Night Football," Timberlake assured Mike Tirico, "That won't happen this time… No, Mike, that's not going to happen." Since Janet Jackson (who, again, inexplicably bore all the blame for this) will not be returning this year, we can probably take his word for it.