@aesmael - I try to do it late at night and keep it to 2h 30m of shows. Which is how KENS-TV did their "Saturday Sci-Fi Theater" back in the 80s (Twilight Zone, Star Trek, Battlestar Galactica)
But I've run out of 30 minutes Sci-Fi so it's 3 hours now. Also, I have a ton of shows waiting to be watched, but I don't do it until we end a show.
Also, I rarely Sit-And-Watch TV. It's usually on while I'm doing something else, which is how I've always watched TV.