Jon Stewart's friends -- and foes -- come back for star-studded 'Daily Show' send-off
Stephen Colbert returns to 'The Daily Show' to send Jon Stewart off on Aug. 6, 2015. [YouTube]

An array of former Daily Show correspondents came back to the show to open the show Thursday, with Stephen Colbert capping the segment off by thanking Stewart for his 16 years helming the program.

Saying "This is it!" Stewart kicked of the last episode saying he felt "obligated" to devote the show to covering the GOP debates, while welcoming back old hands like Lewis Black,  Steve Carell, Samantha Bee, and Aasif Mandvi to take a candidate each to focus upon.

Current cast member Jordan Klepper scored a winner on the debates, noting, "I can't believe Trump took out his penis,  soooooo late in the debate."

Along the way, some of Stewart's favorite targets also appeared, including Arby's CEO Dave Brown, who turned the tables on the host with his own mock slogan: "Jon Stewart: It's like your TV threw up on your face."

Also appearing was Fox News host Bill O'Reilly, who chided, "Have fun feeding your rabbits, quitter!"

Watch the opening, as posted on Thursday, here.