John Glover reprises his role of Lionel Luthor on this week's episode of Smallville, and The CW is clearly as excited over this fact as fans of the hit drama themselves.

How do we know? Because that network has released four new clips from "Luthor," all of which take place in the alternate dimension in which Clark finds himself during the hour.

How did he get there? What's his relationship to Lionel in this parallel universe? Answers await. Check out the following quartet of sneak peeks now.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.