Dammit. I just watched seasons 1 and 2 in 3 days. I have, what, a month to catch up before the season 6 premiere? Looks like I'll be done within a week.
We just picked up the first 5 seasons at Best Buy on sale, glad it was posted on the forum! We won't be able to watch season 6 because we don't have Showtime, but we have a lot more to watch now!