Be sure to check out Smallville this Friday at 8pm Eastern with "Booster" on the CW.
Check out the two hour finale Friday May 13th on the CW and head on over here to see a promo trailer.
Updated: CW released the synopsis to the finale:
BE THERE AS SMALLVILLE WRAPS UP CLARK KENT’S TEN-YEAR JOURNEY IN AN EPIC TWO-HOUR SERIES FINALE — The story of Clark Kent (Tom Welling) culminates in this epic two-hour series finale as Clark takes the last step to becoming the Man of Steel. With surprise guest appearances, nods to the first few seasons of the series and Michael Rosenbaum’s return as Lex Luthor, this final episode wraps up a decade-long story following one’s man’s journey to becoming the world’s greatest superhero. Erica Durance, Allison Mack, Justin Hartley, Cassidy Freeman, John Glover, Annette O’Toole and John Schneider also star. Kevin Fair directed “Finale Part 1,” which was written by Al Septien & Turi Meyer and Greg Beeman directed “Finale Part 2,” written by Brian Peterson & Kelly Souders.