I’d go with some earlier episodes of The West Wing.
The Season 2 wrap up of “The Fall’s Gonna Kill You,” “18th and Potomac,” and “Two Cathedrals” is pretty damn tight. Or you could go a few episodes earlier with “Somebody’s Going To Emergency, Somebody’s Going To Jail,” “The Stackhouse Filibuster,” and “17 People.” The last seven episodes of Season 2 are a pretty darn good arc all together.
You also couldn’t go wrong with “What Kind Of Day Has It Been” wrapping up Season 1 and the two-part Season 2 openers “In The Shadow Of Two Gunmen, Parts I and II.”