"Prison Break" (8 p.m., Fox): We're starting to wonder if they're ever going to bust out of the

"Prison Break" (8 p.m., Fox): We're starting to wonder if they're ever going to bust out of the slammer on "Prison Break." Meanwhile, the crazy twists keep coming. Tonight, Lincoln finally learns the identity of the mystery man, and Michael realizes that Sara holds the key to the entire escape plan. Was that a kiss we saw in the previews?
"All of Us" (8:30 p.m., UPN): Will Smith directed tonight's episode of "All of Us," which tackles a sensitive subject. When Bobby innocently blurts out the N-word during his birthday party, Robert and Neesee struggle to figure out a way to help their son understand the impact and historical significance of the term. Keith David ("Crash") guest stars.
"American Experience: The Alaska Pipeline" (9 p.m., PBS): In 1968, America's largest oil field was discovered in Alaska. But it would take almost 10 years before crude would begin flowing from Prudhoe Bay to the rest of the continent -- thanks to a concerted effort from ancestral Alaskans, environmentalists and even the government's own engineers. This program goes inside the political wrangling behind the construction of the 800-mile trans-Alaska pipeline, which traversed three mountain ranges and hundreds of rivers and streams as it passed through some of America's last untouched wilderness.