Women haven't swooned like this since Old Blue Eyes crooned love songs.

When Barry Williams, a.k.a Greg Brady, stepped on stage at Schwab Auditorium last night, cheering and screaming erupted throughout the capacity crowd. Women of all ages (and more than a few men, too) shot to their feet and let loose yells usually reserved for football games.

And if it was cold outside, it was more than Brady inside.

Although his hairline has receded and voice deepened with age, a little glimpse of America's favorite Brady peeped through Williams' calm demeanor.

Williams, who said he doesn't have a problem separating his real self from his TV character, spent most of his time talking about his Brady twin, Greg.

But a pre-show press conference managed to squeeze personal facts from Williams.

The 39-year-old Williams said that he always got along with his TV family and still keeps in touch with them. In recent years, he has worked in musical theatre, touring with City of Angels and preparing for the role of Don Quixote.

He also confessed that he did not understand the Brady-mania that is sweeping TV rooms across the country.

Asked to pin down its cause, Williams replied " I don't know for sure."

Audiences can relate to Brady family members and identify with at least one of the bunch, he said.

When asked what it was like to be one of America's sex symbols, he grew a little flustered and replied, "You flatter me."

But Karin Lawson might disagree.

"It was awesome -- a dream come true. Absolute grooviness!" gushed Lawson (senior-secondary education). And if Lawson was more excited than most, she had reason to be.

She actually got to lay a big old smooch right on ultra-groovy Greg Brady's lips.

Even if the rest of the crowd didn't get to pucker up for Williams, they still displayed their noisy affection. They certainly weren't shy about it. Throughout Williams' almost 75-minute multimedia presentation, "Growing Up Brady," the ex-Brady was showered with cries of "We love you," and "Greeegg!"

And, as impossible as it may sound, Williams matched the crowd's energy, whetting their appetite with a presentation of vintage double-knit Brady clips. Then he launched into a juicy expos of the Brady family dirt that Alice never tidied up.

Williams dished about his infatuation with Carol and his "thang" with Marcia to a crowd that was more than willing to soak it all up and scream for more. And the racier, the better.

"Can you blame me?" Williams quipped about his attraction to Marcia when she was only 12. "At least it wasn't Cindy."

He then elaborated on his torrid relationship with Maureen McCormick that began with a passionate kiss on a moonlit Hawaiian beach.

From here, it was only a few steps to the subject of Florence Henderson.

Williams reminisced with gusto, detailing a photo session where Henderson's off-color comment about sucking a prop lollipop prompted his hormone-crazed brain to blurt out a reply that most family newspapers wouldn't print. (And neither will we.)

And the crowd loved it.

Williams' banter about his favorite episode (starring his super-groovy bachelor pad), about his near disaster (he almost kissed a coral reef while surfing in the Hawaiian episode) and about the time Tiger became road kill (sorry) held the crowd enchanted.

But the topper came when Williams disappeared and re-emerged in a fringed leather vest, platform shoes, plaid bellbottoms and headband that barely held back his '70s afro. He then invited crowd members on stage and taught them all the far-out dance moves like the "Brady Break." About 100 Brady-maniacs crowded the stage as Williams' attempted to recreate the (in)famous "Silver Platters" episode.

"It was a dream come true," exclaimed participant Beth Graziano (freshman-advertising), with Greg-induced glee written all over her face.

Even the Q-and-A session brought a response most professors would have killed for. Questions about his marital status, the Brady pets and the fate of Alice were fired from all corners of Schwab Auditorium.

And yes, Williams even answered THE BIG QUESTION.

"I only had sex with Florence Henderson once," he confessed, before admitting, "She wasn't actually there at the time."

In case you didn't get enough, Williams also said Paramount Pictures has announced plans for an upcoming feature film titled, appropriately enough, Brady Bunch: The Movie. Groovy.