"What the f*** just happened," Ferrell said after completing a scene with his co-star ... Despite their fond memories, Bewitched received poor reviews and currently has a 23 percent freshness ...

The Anchorman star and the Late Show host celebrated the 20th anniversary of Nora Ephron's movie Bewitched ... jogged Ferrell's memory about a key scene — a meet-cute between the two leads ...

Colbert also reenacted Kidman's bizarre farewell to him on set, in which she continuously moved her strong grip all over his arms. "She walked away, never touched my hand, and I just stood there ...