The Stardust spacecraft will rendezvous with comet Temple 1 in a few hours time. NASA TV will start broadcasting the encounter around 8:30pm (14th) US Pacific Standard Time, which is Tuesday, 15 February 2011 at 04:30:00 UT and is roughly 3:30-4:00 pm on the 15th here in Australia, with the encounter around 5:30 pm.
UPDATE: The spacecraft successfully passed the comet, surviving the flyby (despite taking a hit), and taking an image very 6 seconds. The images should be available around 6:00 pm Australian time (Midnight US PST).
UPDATE 2: Data is downloading now.