Pat Shortt started in comedy when he left Art College. With Jon Kenny he created 'D'Unbelievables', Ireland's most popular comedy duo. Together they performed their unique brand of comedy in theatres all over Ireland, Great Britain and The United States as well as various countries across Europe. They produced four critically acclaimed and sell-out shows as well as writing and producing chart-topping Videos.

As a solo artist Pat's first show was a sell-out. Called simply Pat Shortt Live it played more than 250 dates around Ireland. It began at the Cats Laughs Festival in Kilkenny, where it sold out before the festival even opened, the first act ever to achieve this landmark. The undoubted hit of the Festival, Pat's work was hailed as "comic genius" by the Irish Times.
His second show "You Won't Get Away With That Here" has achieved equal success selling out shows all over the country.

An actor of note, Pat has appeared with Druid Theatre Company in their production of Martin McDonagh's The Lonesome West. Movie title's include Angela Mooney Dies Again (with Mia Farrow), This Is My Father (with Brendan Gleeson, Aidan Quinn, Stephen Rae and James Caan) ,The Closer It Gets (with Ian Harte, Niamh Cusack and Sean McGinley), Man About Dog written by Belfast-born Pearse Eliot, and Wheeler McCoy in the movie "Strength & Honour". Most recently Pat played the lead role of "Josie" in the film Garage. Garage was a huge success, and is the second feature film from director Lenny Abrahamson and writer Mark O'Halloran. It picked up the CICAE Art and Essai Cinema Prize at the Cannes Film Festival and Pat also won awards from IFTA (Best Actor), Evening Standard (Best Actor) and the Monte Carlo Festival (Best Actor). 'Garage' screened as part of the Directors' Fortnight sidebar at the prestigious French festival. Pat has also recently completed two films, 'Soulboy', directed by Shimmy Marcus and 'Guard', with Brendan Gleeson and directed by Ned Kelly.

Television credits include Tom the Character in Fr. Ted, (Channel 4) and Bobby in The Fitz (BBC). Killinaskully is a hit series created by Pat for RTE , and ran for five series, the last of which was screened on RTE during 2008. Killinaskully was nominated three times by IFTA for best Entertainment programme and was also nominated in the Best Entertainment category at the Monte Carlo Television Festival. 2009 was a busy year for Pat with two pilot programmes for RTE ('Mattie' and 'Inside the Crystal Ball'), filmed in the latter part of the year and screened over the Christmas period. Pat also starred at the National Concert Hall as Herod in Jesus Christ Superstar in October and is currently touring with his latest Live Show 'Pat Shortt in The Hall'

An accomplished musician Pat has recorded with many bands and toured extensively in the U.S. with the brass section of The Saw Doctors. In 2006, he scored the big hit in Ireland with the song "The Jumbo Breakfast Roll" under the guise of Showband singer Dicksie Walsh. The song was a number one hit in Ireland for six weeks with sales going 4 times platinum. This track was followed in 2008 by a further single 'Where Did My Money Go', a recession busting sony by Dixie Walsh (aka Pat Shortt).