I NEVER used to watch network TV regularly (although I followed JAG for awhile.)
24 hooked me, as did Alias (at first, lately, I'm not watching as religiously, LOL), but I also got hooked on LOST (not as action packed, but clever writing and flashbacks into the characters lives...and the flashbacks always surprise me because I think I've figured out the character, but am usually wrong.)
24 has definitely been added to my 'have to watch' list. 'Lost' is the only other one I will schedule myself around to watch. I recently started watching re-runs of 'Monk' and I like that, too, along with the original 'CSI' but if I miss them I don't have a stroke about it like I would with 'Lost'. Up until about a year ago I almost never watched TV, now I'm a damned junkie.
Hard to watch Alias anymore now that they moved it to different days and then stopped airing it altogether.
It's the number one reason I stop watching shows -- when they move them to new nights. I don't need to watch TV, so it's a good thing.
I even stopped watching 24 in year 3 because after a couple of episodes it just seemed the same as always, and a little too unbelievable.
Season 4 get me hooked again, because of the 4-hours in 2-nights trick. After watching the 1st 4 hours I was hooked, and it was easy to do that because they were all on together while it was fresh in my mind.