chuck versus first class nbc

A look at tonight's sci-fi TV:

Chuck, "Chuck Versus First Class" – Superman himself, Brandon Routh, arrived last week to take over command of Operation Bartowski. This week, another Supes vet, Smallville's Kristin Kreuk, joins the show for an ongoing arc. Kreuk guest stars as Hannah, a successful IT tech who has fallen on hard times. And, as you might have guessed, she ends up working at the Buy More, the unofficial home of L.A.'s down-and-out nerds. Hulking WWE champ "Stone Cold' Steve Austin also guest stars tonight as a scary baddie who complicates Chuck's first solo mission and ... er ... challenges him to a fencing match. (8 p.m. ET on NBC)

Heroes, "The Art of Deception"Heroes earned its weakest ratings ever last week, and I doubt the show will do much better tonight, especially since its up against Fox's 24. For those still watching, tonight HRG kick starts an emotionally tense war between the carnies and the heroes. Elsewhere, Sylar asks Matt to drain him of his powers. (9 p.m. ET on NBC)

Head after the jump for promo clips and more TV picks.


Chuck promo:


Heroes promo:

Reruns and marathons:
- Ghost Whisperer (Mini-marathon starting at 7 p.m. ET on Syfy)

- Moonlight (8 p.m. ET on Chiller)

- Futurama (Two episodes starting at 9 p.m. ET on Comedy Central)

Movies:
- I Am Legend (8 p.m. ET on HBO)

- Space Cowboys (8 p.m. on AMC)

Check your local TV listings for more.