A friend got me started on the Matt Smith seasons, but I decided to go back to the Eccleston seasons, and start from there. I've heard a lot of good things about Tennant's Doctor, and I really want to get to that, but I mostly only watch it when I'm with my friend at the moment.
The feeling of not having to get out of bed in the morning. Also, being able to wake up, turn on your TV, and start playing video games from the moment you wake up, till the moment you go back to sleep. (I can be a seriously, professional level of lazy-bastard sometimes.)