By T.K. DEHN
From its one-off holiday title sequence to the series-specific jokes about fruitcake (and of course the fruitcake does come to menace the town’s inhabitants), “O Little Town” is a uniquely EUREKA Christmas episode. Some plot elements are a bit too wacky even for EUREKA, which is why we get the framing device of Jack (Colin Ferguson) telling four cynical snowbound kids of a Yuletide when it was unseasonably sweltering in Eureka. The town’s electromagnetic shield has gone haywire, trapping everybody inside. Taggart (Matt Frewer) is visiting town in an actual flying sleigh, determined to find Santa, while at Global Dynamics, an energy project gone amok and Taggart’s gift-shrinking technology are causing the town to get smaller and smaller. On the upside, there’s a Secret Santa running around, giving everyone the perfect present. Who can it be? Maybe … Santa?