Finch talks to Emma Blake outside the courthouse in episode 4x14 "Guilty".
Carter calls the Man in the Suit on a radio she recovered from the robbery crew in episode 1x03 "Mission Creep".
Fusco and Finch head to the FBI office to gain access to the safe only to have Vigilance show up in episode 3x19 "Most Likely to…".
Assassination of Don Barzini.
Bull gives Clyde Rutledge back his watch with the listening device installed in episode 1x01 "The Necklace". Reese Burton is hounded by the press on her way out of her arraignment in episode 1x03 "Unambiguous". Bull talks to Izzy's assistant Alison outside the courthouse after jury selection and Izzy invites Benny out for dinner in episode 1x08 "Too Perfect". Appears in 8 more episodes.