I used to movie binge three or four times a week (I referred to them as 'movie nights'), but now it's rare for me to have a movie night more than once a week. Still, I watch a ton of movies. I see almost every film in the theater (even Bieber) and I own greater than fifteen hundred DVDs, a few hundred of which I haven't seen yet.
My longest movie session wasn't really a movie session at all. It happened during my all-time longest bout with insomnia, a 58 or 59 hour mess that included three different shifts at work. Between shifts, I would watch movies and surf the 'net in the hope that I would pass out, but I didn't. I watched 8 movies in the 30-some-odd hours of free time that half-week. Fucked if I can remember which ones off the top of my head, but I can find out after a quick check on IMDB.
I don't know what to recommend you without knowing which films you enjoy. But I will always recommend movies like the first two Godfathers, Goodfellas, Pulp Fiction, Reservoir Dogs, Clerks, Casablanca, Raiders of the Lost Ark, Perfect Blue, Star Wars and Empire, Arsenic and Old Lace, Snatch, Lock Stock and Two Smoking Barrels, Die Hard...