Smallville: Top 10 episodes (Season 6)

The Green Arrow sends out for reinforcements and Bart Allen, a.k.a. Impulse, Arthur Curry (Aquaman) and Victor Stone (Cyborg) return to Smallville to help him take down LuthorCorp's secret lab called 'Project 33.1'. During a break-in at the LuthorCorp facility, Bart is captured and tortured by Lex for information to who hired him. Clark sets off to rescue him but is felled by kryptonite. An alarmed Chloe goes to Oliver for help, and the newly formed "justice league" springs into action to rescue Clark and Bart. Meanwhile, Oliver painfully decides to break up with Lois, feeling that his dedication to justice is more important, but he leaves out that information from her.

Clark enters a parallel environment in his subconscious where he is powerless, no one believes the truth about him, and things have turned out much, much differently.

When Clark finally discovers Lionel threatened to kill him unless Lana married Lex, he goes after Lionel to silence him once and for all. Meanwhile, Lana tells Lex she is leaving him, and John Jones, the Martian Manhunter, makes a return appearance to help Clark stop Lex, who has captured the last surviving phantom escapee from the Phantom Zone, having possessed a young boy, in order to use its DNA to power him army of super soldiers at his secret lab '33.1'. Clark bids goodbye to Martha as she prepares to leave Smallville for Washington D.C., and Clark finally reveals his secret to Lana to get her to stay in town. But when Lana mysteriously 'dies' in a car bombing, Clark thinks Lex was behind it and sets off to kill him, and has a fateful meeting with the last wraith of the Phantom Zone at Lex's 'Project 33.1' lab at Reeves Dam. Lois goes to Reeves Dam in search of information about Lex's secret lab and is brutally stabbed by a security guard. Chloe finds a practically dead Lois at the dam where in a moment of weakness, Chloe's secret power is finally revealed.

Clark and Lois are on the trail of a thief that Lois has named the Green Arrow Bandit. But this "bandit" may not be as big a villain as they believe.

Classmates from Lex and Oliver's reunion begin to die, and they begin to blame each other.

After Jodi Keenan, the wife of a Special Forces soldier, sets off a pipe bomb in one of Lex's secret labs, Lionel is severely injured and Lex is taken hostage by the enraged spouse. Claiming Lex kidnapped her missing husband, Jodi threatens to blow up the entire lab with Lex inside unless he tells her where her husband is. Lex naturally denies knowing Jodi's husband, Wes, Clark sets off to rescue Lex, but is immediately felled by the kryptonite lining the earthen walls. Lex and Clark realize the only way they will make it out alive is by helping each other before the bomb detonates. Meanwhile, Lionel reveals to Lana why he forced her into marrying Lex, which leads her to investigate Lex's secret research of his 'Project 33.1' research as well as his work in tracking down the Phantom Zone escapees to capture and use one as part to create his army of 'super-human' soldiers.

With Clark banished to the Phantom Zone, Metropolis is in shambles as the city riots, and Chloe & Lionel plot to rid Lex of General Zod...one way or another.

Clark once again becomes "under the influence" of red kryptonite, and will say his true feelings on such things as Lionel and Martha's relationship, and Lana's pregnancy, but there may be someone else that will get affected by the red k.

Clark and Chloe discover that Titan, another alien escapee from the Phantom Zone, is the hulking star of a secret fight club whose bloody, bare-knuckle battles to the death are broadcast on the Internet. Lois smells a story and investigates on her own but is captured by fight manager-presenter Maddox, the Belle Reve administrator, and forced to become wrestler Athena's first opponent. To save Lois, Clark reveals his ability to catch bullets to Maddox so he can fight Titan, but is stunned to face Lois in the ring instead... Lana returns from her honeymoon with Lex, whose men are looking for Titan, but she's more uncertain about living the life of wealthy and power and has trouble with her pregnancy.

Still trying to fix the aftermath of Black Thursday, Clark gets a little run down and begins to show symptoms of the common cold, including a sneeze that has some effects of its own. Meanwhile, someone kidnaps Lex.