With the series finale tonight, "Lost" has enough questions left unanswered to clear off a "Jeopardy!" board.

But that's the nature of a serialized thriller wrapup, which may pose more questions than the episode can answer. Here are some other past television series that had to wrap things up -- some more tidily than others.

"The Fugitive" (1967) » For four seasons, Dr. Richard Kimble (David Janssen) desperately looked for the one-armed man who murdered his wife while trying to elude a massive manhunt. In the end, he would encounter the culprit and rack up enough viewers to make it the most-watched television episode for that time.

"The Prisoner" (1968) » This British cult favorite about a man who mysteriously appears in a strange authoritarian town called "The Village" ended its 17th episode as strangely as it began. The "prisoner" (played by Patrick McGoohan) ended up in a winner-take-all psychological battle with his tormenter and finally landed back where he started in his London apartment.

"The X-Files" (2002) » After nine seasons, agents Mulder (David Duchovny) and Scully (Gillian Anderson) answered only some of the questions behind the alien conspiracy. And even after two theatrical movies based on the show, fans weren't that much closer to finding out what the whole crazy, mind-tripping thing was about.

"Battlestar Galactica" (2009) » In the finale of the four-season run, Admiral Adama and the crew of the Galactica, along with the robotic Cylons, finally reach Earth. They populate the then-prehistoric planet, proving there is a little Cylon in all of us (yech!).

"Buffy the Vampire Slayer" (2003) » The ultimate showdown between good and evil is captured in the last episode of Joss Whedon's horror/fantasy thriller. Buffy (Sarah Michelle Gellar) concocts a plan to fight the evil First, engaging in a spectacular battle in which Buffy saves the world.

Vince Horiuchi