Picking one show to look at its connection to the heritage of the Irish today, I chose 'Maverick' for two of its episodes.
First up, a look at Irish history through the eyes of a Maverick:
"The Bold Fenian Man"
The Fenians, an Irish Revolutionary Brotherhood, are trained soldiers sworn to free Ireland from British rule. The Fenians have gathered in Dakota City to plan a march into Canada where they want to take hold of a small part of British property hostage in exchange for Ireland's freedom. After England pressures the United States to intervene, Beau Maverick is blackmailed into infiltrating the Fenians ranks by a shrewd Army colonel.
And going for the theme of Irish legends....
"Mr. Muldoon's Partner"
An Irish-themed leprechaun comedy with Mickey Rooney's lookalike son, Tim Rooney. Mickey Shaughnessey played Mr. Muldoon, and it's never settled one way or the other as to Muldoon being a real leprechaun. (However, he does bear enough of a resemblance to the leprechaun in the Visa Check Card commercial to suggest he may be that leprechaun's father.)