Another 24 episode airs tonight (FOX, 9 pm et/pt), as Jack Bauer seeks revenge for the death of Renee Walker. Kiefer Sutherland believes that amidst all the explosions, killings, and doomsday scenarios, Jack Bauer is actually a realistic character. And in the real worlds, sometimes the good guys take their share of lumps. (CLICK ON THE MEDIA BAR BELOW TO HEAR KIEFER SUTHERLAND)