See also: Star Trek, Deep Space Nine, Voyager, Enterprise, Discovery, & Short Treks.
From episode 1x01 "Encounter at Farpoint".
Source: I Am Not a Stalker
Wesley accidentally steps in a flower bed in episode 1x07 "Justice".
Source: Memory Alpha
From episode 3x24 "Ménage à Troi".
Source: Los Angeles Magazine
From episode 1x07 "Justice".
From episode 1x11 "The Big Goodbye". From episode 6x01 "Time's Arrow: Part II".
From episode 7x23 "Emergence".
From episode 3x04 "Who Watches the Watchers".
From episode 5x02 "Darmok".
From episode 4x09 "Final Mission".
From episode 4x20 "Qpid".
From episode 5x03 "Ensign Ro".
From episode 7x08 "Attached".
From episode 7x13 "Homeward".
From episode 5x04 "Silicon Avatar".
From episode 5x26 "Time's Arrow".
From episode 6x08 "A Fistful of Datas".
From episode 6x26 "Descent".
From episode 7x04 "Gambit: Part I".
From episode 7x25 "All Good Things...".