Films won't last you that long, I would just find a good tv series to download or something and work your way through that.
http://www.buddyforum.de/showthread.php?2120-[Boredom]-A-little-something-to-do-while-botting!&highlight=Boredom Ultimate anti-boredom thread!
Agreed, I've got every episode on my hard drive for streaming to my PS3. List of my personal favorites in no particular order: House, Lost, Battlestar Galactica(remake), The Sopranos, Oz, also currently watching Spartacus - Blood and Sand
Another good choice that I forgot about, have all of those on dvd. For actual films, extended editions of the lord of the rings trilogy will eat up a good chunk of time. Those are between 3-4 hours each. Edit: The Return of the King extended edition is over 4 hours...
yo idk how old you are but ~Avatar the last airbender ~Naruto ~Smallville ~Lost ~Heroes dose it for me
Boondock Saints, Lock, Stock and 2 Smoking Barrells, Trainspotting, pretty much all the Guy Ritchie films are great fun. Watch the complete Soprano's. That will keep you busy for a few days.
Um Stargate Sg1, Stargate Atlantis (just thos 2 will take u 6 months to watch, well thats how long it took me to watch 15 season)