Here's a clip of the very popular Glencallan single malt scotch from Chicago PD season 2 episode 17. I bet Glencallan would be even more popular if it was real. Alas, it shall forever be the most ubiquitous fake scotch in television history. Here's a pile of previous Glencallan scenes with varying age statements.
Glencallan 35 in Sons of Anarchy
Glencallan 30 in Burn Notice
Glencallan 21 in Nip/Tuck
Glencallan 18 in Agents of S.H.I.E.L.D.
Glencallan 40 in Community
Glencallan 1962 in Hart of Dixie
Glencallan in Grey's Anatomy
Glencallan in Breakout Kings