Odo eventually learned from the holodeck personality Vic Fontaine how to express his feelings toward her.
He frequently competes with his friend Dr. Julian Bashir aboard the Deep Space Nine holodeck.
His holodeck re-creation of his favorite bar in Marseilles, Sandrine's, becomes a favorite crew hangout.
Who can forget Lt. Reginald Barclay's Walter-Mitty-esque role-playing on the holodeck, or Troi's outrage when she found herself typecast in his fantasy life as the Goddess of Empathy?
He might come off as something of a stuffed shirt, were it not his taste for detective fiction of the hard-boiled Dashiell Hammett variety and he often enjoys experiencing life as Private Eye Dixon Hill in a holodeck game.