Battlestar Galactica 
2x17 The Captain's Hand
2x19 Lay Down Your Burdens Part 1
2x20 Lay Down Your Burdens Part 2 [season finale]
Nearly a fortnight off and then a four-episode binge to end the season? Yup, that's my way. Still, I'll take a break before commencing season three (or rather, before that, The Resistance webisodes), just to try to separate them a bit in my mind.
Helluva conclusion though: after spending a miniseries and two whole seasons following the fleet for nine months, the series jumps forward twelve in a single cut. And then, after setting up a radically different status quo, it immediately wipes it out with a nice big twist/cliffhanger. Splendid stuff.