1984 (stylized as MCMLXXXIV on the album's front cover) is the sixth studio album by American hard rock band Van Halen. It is Van Halen's biggest-selling album, with 20 million copies shipped in the United States. 1984 reached number two on the Billboard 200 album chart and remained there for five weeks, behind Michael Jackson's Thriller. It produced several singles, including "Jump", Van Halen's only number one single on the Billboard Hot 100; the top-20 hits "Panama" and "I'll Wait"; and the MTV favorite "Hot for Teacher". 1984 was the last Van Halen album to feature lead singer David Lee Roth until 2012's A Different Kind of Truth, and the final full-length album with all four original members.