Undercovers (8pm, NBC) - This is it. The final episode. Steven and Samantha have to abandon their romantic getaway in Greece to help diffuse a hostage situation at a hotel in Tel Aviv. The pair go undercover (for the last time) to start the mission but soon realize the situation is more complicated than they initially thought.
Extreme Couponing (8pm, TLC) - This is not a documentary about the N&O's Sue Stock. Instead, it's a profile of four (other) shopping addicts who go to extreme measures to find great deals.
Dog the Bounty Hunter (8pm, A&E) - Following Dog and his family on a cross-country trip to promote Dog's book, "Where Mercy is Shown, Mercy is Given," and meet fans -- many of whom ask for advice or for Dog to bring home troubled family members.
Letters from Iwo Jima (8pm, IFC) - Clint Eastwood's Oscar-nominated companion piece to his "Flags of Our Fathers" film examines World War II from the Japanese perspective. Ken Wantanabe plays Imperial general Tadamichi Kuribayashi, who led the Japanese troops.
True Blood (8pm, HBO) - The Season 3 marathon continues...
Heads up for Thursday: A "Burn Notice" marathon begins tomorrow morning on USA Network at 6am and runs through 4am Friday. Set the DVR!