On the episode "Charade," Chloe traces a call for Clark because he fears The Blur is being impersonated. Watch a clip from the episode now.
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Smallville airs a new episode on April 23, 2010. It's titled "Charade" and this is the official promo for it.
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Smallville Season 9 Episode 18 Quotes

Lois: Chloe, can you believe it? I'm early.
Chloe: No, Lois, "early" is when you arrive at your destination by a set time. Not when you can see it from seven blocks away.

Stern: Let me guess. You two have a lovers' spat?
Lois: Clark and I don't spat. There was no spatting.