Star Wars Movie Marathon:
a. Marathon Proper (Episodes I-6 in one day)
b. Half Marathon (Episodes I-III on first day, IV-VI on the second)

Star Wars Novelizationathon:
a. Reading all the novelizations in order. I'm currently doing this one, at the beginning of Episode II. I hope to be at A New Hope by May 25th for the anniversary (Wiggum is a slow reader). I'm listening to the music as I go along, as well, sort of combining it with a....

Star Wars Soundtrackathon:
a. God bless Johnny Williams! (yes, I'll be using the special edition's for IV-VI)

Star Wars Trailer-a-thon:
a. From the DVD's, watching all the trailers from all six films.

Star Wars Official Comic Book Adaptationathon:
a. Dark Horses Episodes I-III culminating in Marvel's IV-VI. Slightly weird, I imagine, with some odd continuities (Jabba is the big example. Ok, and the weird Yoda in Episode V too).
b. Star Wars Mangathon; Episodes I-VI. I don't have all of these - hoping they'd have put them into a big complete edition by now.

Star Wars Lego Video Game-athon:
a. I'm almost finished, lost on Endor, Episode VI.

There must be other athons you can do to relive the Skywalker Saga. What will you be doing?