I tend to do this. Not watch things for months then watch them for eight hours or so at a time. I once watched an entire season of Avatar back to back (10 hours? I'd already watched the season twice, though, and I think I skipped the first episode), some 4000 pages of Bleach manga at once (1-233 on mangashare, never to read Bleach again, because it sucks) and a lot of Naruto episodes before I realised the programme was not, at any point, going to get good.