Willie was also in both 'SATC' movies ... and he's at least slated to appear with SJP and co. in "And Just Like That..." -- the new HBO Max series. We know he shot scenes in NYC this summer with Sarah Jessica and Mario Cantone.
WG's roles went well beyond 'SATC' though -- he's been in tons of shows and movies throughout his career ... including stuff like "White Collar," "Hawaii Five-0," "Quantum Leap," "Girl Meets World," "Mr. Belvedere," "Just Shoot Me!" "Big Mouth," "Supergirl," and many, many more.
He's got a total of 170 acting credits to his name, dating back to the '80s.