Smallville: Kara

Clark discovers he has a cousin, Kara, who was stuck in suspended animation for eighteen years. After a rocky first meeting, where Clark and Kara fight, the two soon band together to find Kara's stolen ship. Together they find her ship, which was taken by the Department of Domestic Security, but it is in self-destruct mode. Kara absorbs the explosion before it can kill anyone. Later, Kara reveals that a Kryptonian crystal, hidden inside the ship, was stolen before the ship exploded. Lex finds Lana, who used a LuthorCorp clone of herself to help fake her own death, in China. Lex returns to Smallville, determined to find the girl—Kara—who saved his life.
Adding Kara (Supergirl) to the show is a good move. This brings Clark closer to the hero he is destined to be. It also introduces a new arc to the season where she is actually older than Clark! And that Clark's uncle Zor-El had a specific job for Kara to do. It was nice that in the episode Clark was teaching Kara to use her other powers. And if only Kara can teach Clark to fly