Watch David Letterman Return to The Late Show as Stephen Colbert’s Guest For the First Time Since Retiring

David Letterman returned to his old stomping grounds on Monday night, dropping by CBS‘ The Late Show for the first time since Stephen Colbert took over as host in 2015.

“This is going to be trouble,” he says, visibly touched by the audience’s outpouring of support, followed by this totally genuine request: “Oh my God, Stephen, control your people!” Letterman’s late-night career spanned 33 years, between his gigs hosting NBC’s Late Night With David Letterman (1982–1993) and CBS’ The Late Show With David Letterman (1993–2015).

Since his retirement from late-night TV, Letterman has earned four Emmy nominations hosting the Netflix interview series My Next Guest Needs No Introduction with David Letterman.