Paul Crossan (born 7 May 1973, also known as Rick O'Shea) is an Irish radio personality. He was born in Drimnagh, Dublin 12, grew up in Crumlin, and attended Drimnagh Castle Secondary School and later UCD. He has been a presenter on RTÉ 2fm since 2001. O'Shea has also presented The Poetry Programme on RTÉ Radio 1 in 2015 and 2016. Since 2017 he has been presenting the morning show on RTÉ Gold. He is currently presenting The Book Show on RTÉ Radio 1 since 2019.