O'Loghlin is one of Australia's leading comedians and host of 'The New Inventors' on ABC television and 'The Evening Show' on radio. He was a commerical and criminal lawyer before performing stand-up comedy in 1990. He has been a regular guest on national television programs that feature comedians including 'Good News Week', 'Rove Live', 'Sunrise' and 'The Glass House'. He has also written and hosted his own television shows, 'O'Loghlin on Saturday Night' on ABCTV and 'Inside the Arena' on Foxtel's Arena; and he has written and performed several live comedy shows including 'Lawyer Lawyer' and 'Caught in the A.C.T.' He won the 1999 Variety Heart Award for Comedy. O'Loghlin has also written Umm- : a complete guide to public speaking (2006).