Sisqo was the sixth star to enter the Celebrity Big Brother tonight and the only member of the lineup who was an actual surprise to viewers.

Born in Baltimore, USA, Sisqó is the youngest of three children and a successful R&B singer. Previously the lead singer of group Dru Hill it was Sisqó’s solo single The Thong Song which made his a household name.

Sisqó recorded his first solo album Unleash the Dragon which included The Thong Song which became the anthem of spring 2000. The album which went 5x Platinum and accrued world wide sales of 6,000,000. Sisqó’s follow up album, Return of the Dragon had also had world wide success.

In 2001 Sisqó was nominated for the Grammy Awards: Best New Artist, Best R&B Male Vocal Performance: “Thong Song”, Best R&B Album: Unleash the Dragon. He still writes and performs his own material and has a recording studio in his home.

As well as his music career Sisqó took on supporting roles in the films Get Over It (2001) with Kirsten Dunst and Snow Dogs (2002) in which he stars as a dental assistant with Cuba Gooding, Jr. He also had a role in the hit television series Sabrina, the Teenage Witch in 2001.

Were you surprised when Sisqo showed up and what did you think of his impromptu performance? Leave your comments below.