Of all the unexplainable things on Dharma Island – polar bears, smoke monsters, Nikki and Paulo – nothing has been quite as jarring as It’s Always Sunny in Philadelphia’s Rob McElhenney (aka, Mac), showing up this week as petulant Other, Aldo.

Okay, to be fair, as Aldo pointed out, he had shown up once before: getting conked on the head by Kate and Sawyer as they tried to escape The Others in season three’s Juliet-centric “Not in Portland.” But it didn’t make the elongated appearance any less weird, and true to LOST style, raised more questions than it answered:

-    Why was Mac’s beard so patchy?
-    What happened to his muscle shirts?
-    Does Paddy’s Pub play a crucial part in LOST mythology?

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