Seán has been featured in Time Magazine in the USA as the vanguard of comedy's next generation. He was a finalist in last season of NBC's The Last Comic Standing and has appeared on shows such as The Ellen Show with Ellen DeGeneres, multiple times on The Tonight Show with Jay Leno and The Late Late Show on CBS. Sean has many comedy specials under his belt including Comedy Central Presents... Seán Cullen, CTV/ The Comedy Network's Gemini nominated Seán Cullen's Wood, Cheese & Children!, CBC's COMICS! and his own special, SEÀN CULLEN's Home for Christmas.
Seán is a three time Gemini Award winner in 2001 for his gala performance at Just for Laughs and in 2003 for hosting the 17th Annual Gemini Awards, and in 2006 for hosting What Were They Thinking. Some of Seán's other credits include feature films The Love Guru, Saint Ralph, Where the Truth Lies and Phil The Alien where he won a Canadian Comedy Award for best Male Performance in a Film, and he has starred in his own television series The Seán Cullen Show on the CBC.
In 2004 Seán starred as Max Bialystock in a successful run in the Canadian production of Mel Brooks' The Producers and toured parts of Canada and the U.S. with the Barenaked Ladies.
Seán's highly anticipated second novel of the Misplaced Prince Series: The Prince of Two Tribes, as well as his third novel of his award winning trilogy for young adults entitled Hamish X Goes to Providence Rhode Island is now available in bookstores across Canada and online.