I posted this on my Facebook page last week, then thought a wider audience might enjoy it today: a 1995 episode of the short-lived (and wickedly funny) animated series The Critic that featured Gene Siskel and Roger Ebert.
In the episode, the duo breaks up their partnership and each court the series lead character, Jay Sherman--voiced by Jon Lovitz--as a replacement. Siskel and Ebert do their own voices, as did movie critics Rex Reed and Gene Shalit.
(And to keep this page reasonably honest, the series intro features some nifty animated versions of NYC landmarks such as the Frank Lloyd Wright-designed Guggenheim Museum, the Dakota apartments, the United Nations complex and the departed World Trade Center.)
And I'll close with this 1997 Ebert cameo from the filmed-in-Chicago series, Early Edition: