Chris Elliott, a David Letterman fixture from the early days in the 1980s on NBC, returned to Late Show with David Letterman on CBS last night to show how he spent a day with the NYPD to prepare for his new series on Adult Swim, Eagleheart.

Hijinx ensue. Special bonus appearance by longtime Letterman writer Gerard Mulligan. Roll the clip!


Related: Eagleheart debuts Feb. 3. Catch a sneak peek of Eagleheart with Chris Elliott here.