Okay, so this is the biggest question of my life since I'm addicted to TV series, which one do you recomment, and please, don't write those of 1-2-3 seasons only, I like something like lost, that has a lot of seasons and it has a finish. So your help would mean a lot to me.

It really depends on what you want mate. What do you prefer watching? Comedies? Thriller/action/"adventure" like lost? Cop/Investigation?
myself, i prefer the comedy ones, watched the whole 10 seasons of "Friends" already 7 times, "big bang theory" is a lot funny too. I won't even talk much about that well known one "How I met your mother".
On the other hand, you have game of thrones, which is pretty good, going though it's going for the early 3rd season.
On that "Cop" chapter, I now am watching to "Dexter". Didn't know that until the 4th season came up, it's pretty cool imho. Still haven't finished watching it but the 6th season has already ended.
You have "White Collar", which will start a new season in early july/august I guess.

I recomment Games of thrones it is going to season 3 on december or january but if you see season 1 and 2 i promisse that you will whant to see more, i saw 2, 3 eps. and suddently i was addicted to that xD so i really recomment this.

Game Of Thrones (tho Season 2 was a joke)
True Blood
Two And A Half Men
The Big Bang Theory


Those are the only series I can recall right now, I watch a lot of Discovery Channel, The History Channel and NatGeo so I can't really recommend anything else

Oh yes i completely forgot about two and a half men, which is my favorite series, after friends.

Who watches discovery channel man, how can that be exciting, it's just animals and men like Bear Grylls eating animals

Thank you guys for your suggestions but unfortunately I've seen all of them I like series that have a good story, love the comedies, but I can watch stuff like FlashForward if you've seen that show, it has only 1 season because the ABC network canceled it because they had no viewers on TV, but what they don't know is that a TV network can't compare to the online viewers. I wish they bring back season 2 of that series. It was sooooo goood......

I didn't follow Flashforward, just seen 1 or 2 random episodes. If you seen those all, there are not that many more unseen xD Burn notice is also a good one, probably already seen it too xD Just go grab yourself the 25 seasons of simpsons eheh

Oh. Seinfield is also an awesome series to watch.
Flashpoint i remember watching it in the morning while taking breakfast a couple of years ago, never followed the whole season neither the ones after, but i did enjoy the eps. i saw.
(I'm editing when i remember more ahah). I didn't talk about House cause i think is useless, everyone knows it. Scrubs, another well-known series, I laughed hard watching that xD And "24". I can't remember any more by now, if I do, I'll post them.