Improviser is a fictional character portrayed by John Treacy Egan in the TV series 30 Rock.
They appear in 1 episodes out of a total of 138 aired
Episodes1
Retreat to Move Forward
episode S3.E9 january 2009Liz becomes an embarrassment to Jack when she accompanies him on a corporate retreat. Back at the show, Jenna and Frank sleep together, and Kenneth tries to scare Tracy into eating healthy.
