Some of the more current episodes were enjoying:
Game of Thrones (the best of the lot by far)
Chuck (finished the last season this week, enjoyed it immensely)
The walking dead
Need to get back to Dexter, got to the middle of the second season and Heroes somewhere in the fourth season until we lost interest
Older series I've started watching recently that we really enjoy is Jericho. Need to get Firefly as well.
I guess it's the simple and easyviewing aspect of it. We all have different moods at different times.. some times we want to listen to jazz, sometimes house, sometimes trance... same with series I guess... sometimes you just feel like watching something just for the sake of watching it.. not to try to attain any deeper meaning :P
That could explain why I spent the last few days in bed with the flu, and I managed to stream over 14 hours of "Just for Laughs Pranks" lol
Its one of the best shows on tv at the moment, you definitely should watch it soon. Even if you just watch season 1 and then wait for season 2 to complete in the states before watching season 2, its still well worth it.
I can watch my favourite sitcoms over and over without getting bored. I think I've watched Big Bang Theory season 1 -5 about 3 or 4 times. Same with How I Met Your Mother. As for the length of time ... I can normally revisit a season 3 or 4 months after I last watched it.