A couple key casting notes to pass along for Smallvillle fans:

• Eric Martsolf (Days of Our Lives) will come aboard the show as the character of Booster Gold. He'll appear on the episode titled "Booster." 
• Jaren Brandt Bartlett (Aliens in America) will play a friend of Booster's, Jaime Reyes/Blue Beetle, on this same 17th installment of the season.

UPDATE: TV Guide has also now announced that Sebastian Spence will portray inventor-turned-superhero Ted Kord on this installment.

"We meet Ted Kord as a captain of industry who has lost a valuable weapon... the scarab," says executive producer Brian Peterson. "He'll cross paths with Booster Gold, Jaime Reyes, and, of course, Clark."