NBC is airing the second-to-last "West Wing" episode at 8PM ET.
TV Guide summary here.
Promo for this episode here.
See detailed episode summaries here.
See spoilers for this episode and next week's episode here.
Regrettably, the updates for this episode will be delayed until Tuesday morning because of other responsibilities. It is certain, however, that next week the updates for the series finale will take place Monday morning.