The mentalfloss.com Brain Game presents Tuesday Test Time, live and with limited commercial interruption. Good luck!

What specific factor links these five famous men?

Robert Urich (actor, Spenser: for Hire)
George 'Spanky' McFarland (from The Little Rascals)
Thomas 'Tip' O'Neill (U.S. Speaker of the House)
Alex Trebek (Jeopardy! host)
Wade Boggs (MLB Hall of Famer)

Here is the ANSWER.

THE ANSWER:

Each visited the bar in an episode of the TV sitcom CHEERS.

The Brain Game challenge tomorrow: Wednesday Wordplay. Until then!