It's hard for me..Smallville comes on at 8 and The Office at 8:30..I just bought the season pass for the Office so from now on I can watch Smallville and the Office the next day. Although Smallville is a show I would rather purchase as the episodes are more re-watchable. Smallville is a great show. I think it was around the end of season 4 beginning of season 5 it had new life breathed into it. It's when they started going with the original Superman plotline more it got really good.
My favorite memories from Season 5 (I haven't seen all of them yet): at the end of what I think is the season 5 premiere, Lana says, "I meant every word," and the Depeche Mode "Precious" song cuts in and the camera has a steady shot through all these hallways ending with the spaceship and the special effects of the professor morphing out of the droplets.
And then, this sounds rather macabre, but the funeral (I won't say for whom in case it's a spoiler for those who haven't seen), but the entire funeral scene is so beautiful. There's like a white haze in front of the camera, and the snow is falling so softly on the farm animals and the characters are in slow motion and with Lex and Lionel there is so much said without any words through their movement. Plus the timeless song "I Grieve" by Peter Gabriel is playing.