The Irish Comedy Tour takes the party atmosphere of a Dublin pub and combines it with a boisterous, belly-laugh trio.  The clover - make that clever - comedians, whose ancestors hail from the Emerald Isle, include Detroit native Derek Richards; the Boston-born Mike McCarthy; and New Yorker Jim Paquette.  The irreverent trio, which just released a DVD titled Dublin' Over, has performed at venues across the country, including the Dream Makers Theater at Kewadin Casino; the Sunrise Theater in Florida; and the Palace Station Casino in Las Vegas.