You can watch all episodes of smallville easy, just search it through a FLVDirect player.

Just get any FlvDirect player
ex: link (it´s a free one, supports search on 1600 Streamsites)

1. click on -> search -> video
2. search for "smallville all ep" (it´s online, i searched it a minute ago)
3.select your episode and click on -> watch online or -> download

enjoy

(If you search for a certain episode of a tv show just add "all ep" to name in the search field and you will get all episodes listed)

PS: you can also search for movies,tv shows, musicvideos etc etc

I use this site to watch episodes online. It's pretty good so I hope it works for you

link

I was just searching for the forums on google and found this post and just came here to answer this question that you can watch smallville at link