what would be the ending?

I would like to see them end up together. But, I think they will not depart that much from the traditional Superman. I think they will leave it open as to who Clark is with, although it could be left that it is not Lana. I don't think they will go so far as to have him with Lois at the end of the show.

There is no Lana...Superman winds up with Lois.

Here's the finale of Smallville and a great segue into a series of Superman Begins movies... much like Batman begins.

You do it like Darth Vader in Star Wars III. The very last scene of the show is Tom Welling, Clark, ducking into a phone booth, peeling up his shirt and revealing the big red S underneath.
You either freeze it with that and start in with the Superman theme, or take it further that the very last scene you have Tom do what he vowed never to do in Smallville (i.e. no cape, no tights, no flying), and the very last scene you have him do just that. Come out as Superman, stand there for a moment, look around, and fly off.
Fade to black.
Cut and print.
That's a wrap people.

Before credits roll. You see this.
Superman Begins
Starring Tom Welling
Due in theaters July 4, 2009.

Need I say more?

Dude ... Lana is history ... You know what Superman is all about ... there is no Lana for him ... in his later years he doesnt even talk about her ... and at the end of the last season they showed Lana ending up in a bomb blast ...

I am sure she is not dead though and she will be back in the next season ... all that is to figure out now is what twist do they give to her cheracter because seriously ... she is starting to get a bit boring.

i love him and lana together but in all truth he wont end up with her..
he ends up with lois..even though they stray from the orginal..they do turn around and go back to it too...
im hoping this is not the last season

DUDE!!!! we ALL know the ending and we all know that Clark will end up with Louis. No doubt. Actually, the series is a lot different from the comic. So who can really say. the only positive thing is that Clark will move to Metropolis, work for the Daily Planet and become Superman.

Well somehow they have to explain how Perry White has been the chief editor for decades, Lois Lane has established herself as a world-reknowned reporter who doesn't know Clark, Clark has to become "mild-mannered", Lex Luthor needs to have no reason whatsoever to believe Clark has superpowers or to target Clark, and maybe some other stuff. Oh, and they have to use the Three Doors Down song Kryptonite. Not that I'm a fan of Three Doors Down, mind you.

Of course, they could always do some weird non-artsy thing and kill off all the characters in the last episode to completely contradice the Superman mythos.

When is the next season coming out? anyone know?

i think nothing special will happen in the last episode of smallville.
and i know that he still dont know how to fly in the last episode..
poor superboy...