Titanic (8pm, ABC) - The three-hour opener of a new miniseries that uses real and fictional characters to dramatize the events leading up to the luxury liner's sinking in 1912. Tonight, tension between First and Second Class passengers, and a Catholic engineer from Belfast looks forward to his new life in America. This is from Julian Fellowes, the creator of "Downton Abbey." Fellowes gives his upstairs-downstairs treatment to the Titanic story, but the buzz isn't as strong as it was for "Downton." But -- it has Linus Roache (right)! The one-hour conclusion airs tomorrow night at 9.

Must Love Cats (8pm, Animal Planet) - In the season finale, John Fulton visits a kindergarten for kittens (awww!) and cats that help prison inmates.

The Firm (9pm, NBC) - Another random episode of "The Firm!" Mitch and Ray meet with Andrew, who offers to help expose Kinross and Clark to the FBI. Meanwhile, Abby tries to prevent the next murder, and Mitch prepares to take on Kevin Stack. If my math is correct, two more episodes after this one.

Tanked (9pm, Animal Planet) - Season 2 opens with Wayde and Brett visiting a familiar client in New York to install a shark tank in an orthodontist office.

A Night to Remember (10pm, TCM) - This 1958 classic film based on the book by Walter Lord recreates the sinking of the Titanic.

Saturday Night Live (11:29pm, NBC) - Josh Brolin hosts and the music guest is Gotye.