Career: In 1989, Romano won a talent contest run by a local radio station, which landed him a manager. He made his TV debut that year in The Johnnie Walker National Comedy Search. Appearances on The MTV Comedy Half-Hour and The Tonight Show with Johnny Carson helped boost his profile. Guest roles in animated sitcom Dr Katz, Professional Therapist, proved he could act. He won a regular role in NewsRadio in 1996, but turned it down to launch Everybody Loves Raymond. It proved a wise move. The show ran for nine years, was hugely popular and made Romano a major US star. He's since appeared in the movie Welcome to Mooseport and lent his voice to animated film Ice Age and its sequels. He was last seen in the comedy drama Men of a Certain Age and the sitcom Parenthood.

Career: That resulting concert film No Cure for Cancer made him an instant star in Hollywood. He made a series of guest appearances on Jonathan Ross's show Saturday Zoo in 1993 and was snapped up for a series of movies cashing in on his wise-talking image. However, Demolition Man and Hostile Hostages failed to turn him into a superstar. In 1999, he played the New York cop trying to catch Pierce Brosnan in The Thomas Crown Affair remake. While researching that part, he was so inspired by the cop he hung around with, he created TV series The Job. He co-produced and helped write the Johnny Depp movie Blow, and also provided voiceovers for the films A Bug's Life and Ice Age. He's a driving force behind The Leary Firefighters Foundation after his first cousin and a childhood friend were killed tackling a fire in his hometown. He played veteran firefighter Tommy Gavin in American drama Rescue Me from 2004 to 2011. Issues dealt with in the series included post 9/11 trauma, and the final episode aired fours days before the 10th anniversary of the September 11 terrorist attacks.

Career: The success of American Pie led to Scott being cast in a number of youth-orientated movies, including Road Trip (2000) and Dude, Where's My Car? (2000). He went on to have success with Jay & Silent Bob Strike Back (2001), Bulletproof Monk (2003), The Rundown (2003) and Role Models (2008) but a lot of his movies have underperformed at the box office, including The Dukes of Hazzard (2005), Mr Woodcock (2007), Southland Tales (2007) and Cop Out (2010). Throughout his career ups and downs, he has returned to the role that originally made him famous, playing Stifler in American Pie 2 (2001), American Wedding (2003) and American Reunion (2012).

Career: One of Leguizamo's early acting roles was a small part in Casualties of War (1989). More movies followed, including Die Hard 2 (1990), Super Mario Bros (1993), Carlito's Way (1993), To Wong Foo (1995), Romeo + Juliet (1996), Summer of Sam (1999) and Moulin Rouge (2001). More recently, he has starred in The Lincoln Lawyer (2011), Kick-Ass 2 (2013), The Counselor (2013), Ride Along (2014) and Chef (2014).

Career: Lopez had small roles in films My Little Girl and Lambada before her big break came with a two-year stint in TV comedy series In Living Color. She toured as a dancer with Janet Jackson and appeared in several other TV shows. She then starred on the big screen in My Family, Money Train, Jack, and Blood and Wine. Playing the title role in 1997's Selena proved Lopez was more than just a pretty face, while Out of Sight and The Wedding Planner turned her into box-office gold. Movies since include Maid in Manhattan, Monster-in-Law and the much-maligned Gigli. After a three-year break from movies, she returned in 2010 romantic comedy The Back-Up Plan. She has been a judge on several American Idol series and is a hugely successful recording artist with numerous hit albums, singles and tours to her name.

Career: Jessie J was signed to Gut Records, recording an album for the label, but the company went bankrupt before any material was released. She then found success as a songwriter. In late 2010 Jessie J released her first single, "Do It Like a Dude". She then sent the song to her label, Island Records, before sending it to Rihanna's management. Island then insisted the song become Jessie J's first single, since they thought it was 'amazing'. Huge success has followed. Her follow-up single "Price Tag" was released in late January 2011 to huge acclaim, and she now has a global following. She was one of the four coaches in the first two series of The Voice UK.