To Watch Tonight

What to watch as the cast of "Lost" discover that they are really the cast of "Lord of the Flies," just older ... • MLB: Boston at Baltimore. Do they give the cast of "The Wire" free tickets? [ESPN] • MLB: San Francisco at Houston. Hey, the circus is in town! Come see A .217 hitter get an intentional walk! Right this way, folks! [ Fox Sports Bay Area] • NBA Playoffs: Conference semifinals, Game 4, Detroit at Cleveland; Game 4, San Antonio at Dallas. Mark Cuban is in your head, NBA officials. You will call more fouls on the Spurs. [ TNT]