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Robert de Niro - 'Goodfellas' actor Robert de Niro appeared in the season two finale of 'Extras'.

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Johnny Depp - Johnny Depp took part in a Comic Relief special edition of 'The Vicar of Dibley' in 1999. 

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Johnny Depp - The plot included a film crew coming to Dibley and Geraldine throwing a party for Johnny Depp and other celebrities.

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Gillian Anderson - 'X-Files' star Gillian Anderson has made waves in the UK. She was nominated for a BAFTA and a Golden Globe for her performance as Lady Dedlock in 'Bleak House'.

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Gillian Anderson - Anderson has also received critical acclaim for her work in 'Great Expectations' and BBC Two's 'The Fall'.

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Ian McKellen - The veteran actor returned to his northern English roots in ten episodes of 'Coronation Street' in May 2005.

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Ian McKellen - He played Mel Hutchwright, an unscrupulous author who tried to trick Ken Barlow and Blanche Hunt's book club out of money. He visited Roy's Rolls and the Rovers!

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Samuel L Jackson - The 'Pulp Fiction' actor also joins the list of Hollywood A-listers who appeared in 'Extras'.

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Matt LeBlanc - Matt LeBlanc moved from 'Friends' to 'Episodes', a BBC Two comedy series about two British screenwriters trying to make it in the US.

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Matt LeBlanc - The series ran from 2011 to 2017 and LeBlanc played an exaggerated version of himself.

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Jeremy Piven - 'Entourage' star Jeremy Piven can be seen playing a much more serious role in ITV's 'Mr Selfridge'.

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Jon Hamm - The handsome actor appeared in an episode of 'Black Mirror' and 'A Young Doctor's Notebook', alongside Daniel Radcliffe

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Jessica Chastain - Before her role in the Oscar-winning film 'The Help', Chastain played Mary Debenham on the TV adaptation of 'Murder on the Orient Express'.

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Taylor Lautner - 'Twilight' star and heartthrob Taylor Lautner joined the cast of BBC Three's 'Cuckoo' in 2014.

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Andy Samberg - Golden Globe-winning actor and comedian Samberg starred in a whole season of the same series.

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David Soul - Detective Kenneth Hutchinson from 'Starsky & Hutch' landed a role in a 2001 episode of 'Holby City'.

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Carrie Fisher - The hilarious and legendary Carrie Fisher showed off her improvisation skills in C4 comedy series 'Catastrophe'.

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Sigourney Weaver - 'Alien' star Sigourney Weaver loved ITV's 'Doc Martin' so much that she asked for a part. 

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Paul Dano - After appearing in major films like '12 Years a Slave' and 'Little Miss Sunshine', Dano returned to the small screen and starred in BBC One's 'War & Peace'.

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Robert Vaughn - The iconic 1960s actor joined the cast of BBC's 'Hustle' and even popped up on 'Coronation Street'.

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Robert Vaughn - Over fifty years after 'The Magnificent Seven', he appeared as Milton Fanshaw in the long-running soap.

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Sharon Gless - Emmy-nominated American actress Sharon Gless appeared in BBC One’s medical drama 'Casualty' in 2017.

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Shirley MacLaine - Hollywood legend Shirley MacLaine played the wealthy, straight-talking Martha Levinson on the award-winning drama series 'Downton Abbey'.

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Maggie Gyllenhaal - The gorgeous Maggie Gyllenhaal played the lead role in BBC Two's eight-part series 'The Honourable Woman'.

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Maggie Gyllenhaal - Gyllenhaal won her very first Golden Globe for her role in the series. 

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