He has worked on films and television programs for Sesame Workshop, Nickelodeon, Disney XD, and HBO.

[5] In 1993 he was presented with a Citation for Excellence by UNIMA;[6] and later that year, received a Broadcast Design Silver Award for his series of short films, A Show of Hands.

[9] One of his earliest roles was Mr. Cook on the Nickelodeon series Allegra's Window.

[12] Lagasse also teaches the art of puppetry, lecturing at the Lincoln Center Foundation and instructing students on modern puppetry techniques at the University of Connecticut's Puppet Arts Program.

[14][15] In 2012 he traveled to Haiti with No Strings Productions as a puppet workshop trainer.