Christopher Petry is a director of Smallville. Some episodes he has directed are:
- Persuasion (written by Anne Cofell Saunders) - It is Valentine's Day and while Clark is out on a date with Lois, he unknowingly becomes infected by gemstone kryptonite, which has magical wish-fulfilling properties. Clark mentions to Lois that he wishes they had a more traditional relationship, so Lois quits the Daily Planet, moves in with Clark and starts planning their wedding. Still unaware of his new power, Clark also casually tells Chloe he wishes she would spend more time watching out for him, so an infected Chloe takes his wish to heart and sets her sights on a new target – Lois. Clark also learns of his father's murderer, putting Tess in danger when Clark gets a firsthand-view of his newfound power.
- Ambush (written by Don Whitehead & Holly Henderson) - The General and Lucy Lane decide to drop in on Lois and Clark for a surprise Thanksgiving dinner. Clark and the General get off to a rocky start after Lois' father bashes the superheroes and tells Clark he is trying to pass a vigilante registration law. Meanwhile, in an effort to stop the vigilante registration act from being passed, Rick Flag lies to Lucy in order to lure Clark away from the farm long enough for him to assassinate the General. Lois is torn between making her father proud and her love for Clark.
- Fortune (written by Anne Cofell Saunders) - After Zatanna sends a magically spiked bottle of champagne to Clark and Lois for their bachelor/bachlorette parties, the gang blacks out after the toast and can't remember anything about the night before. When Lois realizes she lost her engagement ring and drags Oliver back to the Fortune Casino, the two run into the owner Amos Fortune, who accuses them of stealing money from him. Meanwhile, Clark tells Chloe he has a memory of stealing an armored truck the night before.