SET YOUR TIVOS. NOW: Next Friday night at this time (5/26, 11pm eastern), the USA Network will be re-running the House episode "Three Stories", the penultimate episode of the show's first season.
The Futon Critic hailed it as television's best hour in 2005; indeed, it won the Emmy Award for Outstanding Writing For A Drama Series, besting both "Walkabout" and the pilot of Lost. I know some in these parts wouldn't hesitate to put it in the same sentence with "Two Cathedrals" and "Love's Labor Lost", even with Bradley Whitford failing to make the trifecta.
If you can't resist, spoil yourself by reading the TWoP recap here.
(For more on this general topic, Matt and I started the Best Dramatic Episodes Of The Past Decade Or So debate even before the blog merger.)