Lost, 24, Prison Break, Heroes were some of my favs...what can I watch today to fill the void?

Those were the shows that convinced me that the excitement of action doesn't always have to come from a blockbuster film. They kept me aching to watch the next weeks episode with cliffhangers and it would be so hard to wait for the next season to start. All these law enforcements stuff, like C.S.I whatever city, Hawaii 5.0, don't catch me because they keep an equation that starts with a crime that is solved and closed at the end of every episode

Dexter and Breaking Bad are the only ones right now that give me the same..."man, this is an awesome show" kind of feeling...but I still need to wait for the seasons to start! What else can I watch and enjoy just as much, past or present? I did start watching Game of Thrones and that's got good potential.

I am watching Once upon a time, which is alright...I lost interest in person of interest, I watch Touch just because I would like the "Jack Bauer" side of K Sutherland to come out, other than what is worth watching?

Thanks!!