Did commander riker captain a starship?

Riker briefly commanded the Enterprise after Picard was abducted by the Borg in the two-part episode "Best of Both Worlds."

Much later, in the movie Nemesis, we are told that Riker has been given command of the U.S.S. Titan. Though the ship is never seen on-screen, the further adventures of Captain Riker and crew are chronicled in a series of novels under the banner Star Trek: Titan.