These were among the notable players moved before the NHL trade deadline Wednesday.
Columbus completed three deals, including one acquiring Gaborik from the New York Rangers for three players. Columbus (15-14-7) sits 11th in a tightly packed race for the Western Conference's eighth and final playoff spot.
Buffalo completed its fourth trade in three weeks by trading Pominville to Minnesota in exchange for goalie Matt Hackett and forward Johan Larsson.
Conacher, second in the NHL rookie scoring race, was traded by Tampa Bay to Ottawa for goalie Ben Bishop.
I challenged him to a goalie fight when we chatted before the game, but he didn't want to go. It was strange to see him at the other end of the ice, but I'm sure he felt the same way looking down at our end.
— Vancouver goalie Eddie Lack joking about facing his former teammate Roberto Luongo after the Canucks' win against the Panthers