Following the airing of the Enterprise cliffhanger season finale "Shockwave" on May 22, UPN will be airing a rebroadcast of an Enterprise episode selected by the fans in an online poll over at UPN.com.

Calling it the "Your Favorite Alien" promotion, UPN is asking fans to choose from five episodes, each featuring a prominent alien race — Suliban, Vulcan, Andorian, Ferengi and Klingon. To enter the contest, click here.

The episodes fans can choose from are "Cold Front" (featuring Archer's Suliban nemesis Silik), "Fusion" (spotlighting a group of unorthodox Vulcans), "Acquisition" (a group of Ferengi seek to strip Enterprise of anything of value), "Sleeping Dogs" (Enterprise encounters a damaged Klingon ship) and "The Andorian Incident" (the first Enterprise appearance of the Andorians).

Fans can view clips at UPN.com from each episode and vote through Tuesday, May 21. The winning episode will be hosted the next evening by Jolene Blalock ("T'Pol") immediately following "Shockwave."