An arc I've grown to like is "Zelda the Great/A Death Worse Than Fate", with Anne Baxter as the title character, a daring escape artist. This was before her turn as Olga, Queen of the Cossacks in the show's third season with Vincent Price as Egghead. Baxter holds the honor of being the only guest star to play two different villains.
Enjoy, guys! Now that I think of it, I should post something more along the lines of an editorial or an opinion rather than shove out the same stuff every time (not that I don't like putting up vids and pics). Then again, I guess you can never have too much Batman!