I am happy the fall season has begun in the US. It means more shows for me to enjoy every week. I will definitely miss Eureka though. I really am excited to see when they'll get Zane and Jo back together.
Shows I'm following this season:

Hellcats - stars AJ Mischalka (as Marti Perkins) and Ashley Tisdale (Savannah Monroe). I love the music used in the series! They had Hey Monday guest last week and AJ covered Sting's Brand New Day. I also like that there's more to this series than just cheerleading. Even my LP had to admit he saw more to cheerleaders after watching the series.

CSI: NY is back. They've lost Melina Kanakaredes which makes me sad but a good series lives on. First ep was ho hum. The 2nd was niiice.

House is back and he's now with Cuddy. Wonder where this season will take the cast?
Smallville is on it's last season (thank God!). It's time for suit to come out. Checkmate, Suicide Squad, JSA and other supers wandering across the screen. I hope they close well.
I'm adding Nikita to my shows to watch. I wasn't sure at first but so far it looks good.
The Mentalist is on it's third season. Glee is back. NCIS and NCIS LA have begun. Big Bang Theory is still a hoot and a holler. Bones has started though the first ep was so forced it was painful. CSI just really isn't the same for me without Grissom so I watch but not as avidly.
Still waiting for CSI Miami and Lie to me to start back up.