Of all the shows currently on TV highlighting the gay experience in America, Vice President Joe Biden took it back - all the way back - with his shout-out to the '90s NBC sitcom "Will & Grace" on Sunday.

During an appearance on NBC's "Meet the Press," Biden said he's "absolutely comfortable" with same-sex marriage, and gave props to "W&G," which debuted in 1998, for changing the public's perception on the topic.

"I think 'Will & Grace' did more to educate the American public than almost anything anybody has ever done," said Biden in a nod to the beloved series about a gay man living with a straight woman in New York City.

When the VP was asked if his own personal position on same-sex marriage was at the point where he would openly advocate for it, he responded, "I just think that the good news is that ... more and more Americans [have] come to understand [that] what this is all about is a simple proposition: Who do you love? Who do you love and will you be loyal to the person you love? And that's what people are finding out what all marriages, at their root, are about."

The stars of the NBC hit, Debra Messing and Eric McCormack, tweeted that they're flattered by Biden's name-dropping of their former gig.

"I'm thrilled Biden has come out in support of gay marriage and am beyond proud of what he said @ W&G #PROUD," Messing, who currently stars on "Smash," posted Sunday. "I could not be more proud. Thank you Mr. Vice President for yer support and yer words about 'W&G.'"

McCormack added, "Three cheers for VP Joe Biden! Fantastic interview. Now who ELSE is gonna step up?"