Celebrity 'Will & Grace' Break Ground By People Staff Published on November 27, 1998 12:00 AM Share Tweet Pin Email Cast members of the NBC sitcom “Will & Grace” have taped a TV ad opposing a California ballot initiative that would tighten the state’s restrictions on same-gender marriages. Under Proposition 22, California law would not recognize same-sex unions performed under any other jurisdiction. The spot — which features Eric McCormack, Debra Messing, Sean Hayes and Megan Mullally — is believed to the first in which the cast of a TV show has appeared together in a political ad. On the series, McCormack and Hayes play gay characters. With additional reporting by Tony Phillips, Liza Hamm and Ivory Clinton II.