AT THE MOVIES, Sandra Bullock has a hit with the family dramedy Hope Floats (left), which opens to a $14.2 million gross. ON TV, with most prime-time shows in reruns, three games in the Bulls-Pacers NBA play-off series lead the weekly Nielsens. IN MUSIC, the soundtrack to the Nicolas Cage-Meg Ryan weeper City of Angels rises to No. 2 on the Billboard chart in its seventh week. AND IN THE NEWS, computer problems plague the Mir, thus threatening a mission by shuttle Discovery to the ailing Russian space station. Eventually abandoned, it would plummet to the earth in 2001.