i dont watch alot of TV but the shows that have me watching there new episodes every week are:
two and a half men:
it has found a way to remain funny thru out the years, the quality has not decreased a bit since the first episode, if anything it has improved. the concept of the show (drunk womenizer but somehow fortunate uncle, father with the million and one problems and fat stupid son) was genious and thats one of the reasons of its succes
LOST: one of the most mind twisting shows out there, you never have any clue about whats gonna happen next, but thats one of the main reasons of its appeal.
LIFE: the hole ZEN way of the show is a fresh idea, and after having practically copys of old shows showing up more and more every year (the new beverly hills 90210 for example) its nice to see a new kind of story, and the hole show is relaxing and its a chill out show, but also has alot of mistery and speculations.
CSI miami and las vegas: csi miami is way flashier and more surreal but its a good change from las vegas wich is dark and gloomy, the catch lines that horation cane says at the beginning of every episode are what gives it a more "Hollywood" feel.
i preffer csi las vegas just because i think csi alot of the times can push it to far with stupid things, but there both worth watching.
Supernatural: i LOVE that show, this year it has a more comedy based acting and scripts (a giant porn watching, vodka drinking, emo teddybear showing up on a episode is clear prove of the more comicall approach they took this season) but it still remains very dark at parts, and it has a awesome script and awesome special FX, its a 5/5 for me.
Prison Break: i think alot of people dont like this show because its just OVER PACKED with stuff, in every episode either someone dies, or someone new shows up, or someone gets shot, etc..... theres not a calm momment in the show, and i think that can be a bit frustrating, but it does not take away from it being a great show
Born Survivor: bear grylls for me is the best and most entertaining survival expert on tv right now, he does all kinds of crazy stuff and its just awesome to watch him running around the dessert, jumping of waterfalls, eating all kinds of crazy stuff, its a entertaining show, and its perfect for your CHILLAX momment of the day.
thats it, i cant think of any other shows right now...