Career: Bakula continued to work on stage before gaining TV roles on shows such as Designing Women, Gung-Ho and I-Man. His big break came in 1989 with TV movie Quantum Leap: Genesis. A hugely popular series based on the adventures of time-travelling scientist Sam Beckett followed. Since then, he's continued to work on TV, including a three-year stint in sitcom Murphy Brown, and in films such as American Beauty, The Colour Of Night and Sibling Rivalry. Theatre work includes a Tony-nominated role in the musical Romance/Romance. His stint as Captain Jonathan Archer in Enterprise, the prequel to the original Star Trek series, lasted for four seasons until it was axed in 2005. More recently, he has had a recurring role in Chuck, and starred in American comedy drama Men of a Certain Age, Behind the Candelabra, Looking and NCIS: New Orleans.

Career: Made her TV debut in sitcom Veronica's Closet, before paying the rent with a string of appearances in Love Boat: The Next Wave, DC, G Vs E, CSI: Crime Investigation and JAG. Roles in miniseries Jason and the Argonauts, and TV movies On The Edge, and Diamond Hunters paved the way for Star Trek prequel Enterprise.

Career: Dean Morgan made his acting debut in the film Uncaged (1991) but he is largely associated with TV roles. His breakthrough came in 2005 when he began playing Denny Duquette in Grey's Anatomy. He has also had recurring roles in The Burning Zone, Supernatural, Weeds, Magic City and Shameless. His other film credits include Watchman (2009), The Losers (2010) and Red Dawn (2010).