Fans cheer MacFarlane's first Oscar outing

Oscars host Seth MacFarlane fans rallied behind the "Family Guy" funnyman on Sunday, giving the first-time emcee a thumbs-up online for his opening monologue and early jokes.

Twitter came alive with kudos for MacFarlane, while 57.1 percent of those who took part in a real-time poll on rated his debut "above average" or even "awesome" at the outset of a musically-themed Oscar evening.

"Star Trek" star William Shatner, in the role of Captain James Kirk, literally dropped in from the future to warn MacFarlane he was doomed to be the "worst Oscars host ever."

The monologue veered into frat house humor with "We Saw Your Boobs," a 1930s song-and-dance number with MacFarlane name-checking actresses -- many in the audience -- who've appeared nude on screen in their careers.

The real-life Gay Men's Chorus of Los Angeles joined the production number, and #wesawyourboobs briefly trended on Twitter.

Prompt relief came from sock puppets re-enacting the crash scene from "Flight" before MacFarlane returned as the Flying Nun in a flirty green-room encounter with Sally Field, the original Sister Bertrille in the 1960s TV show.

But not everyone was impressed.

"Seth McFarlane is wearing a tuxedo made of self-satisfaction and irrelevant pop culture references," tweeted TV writer Ed Lee on his @smedlee Twitter account.

Later on, MacFarlane tested the margins of good taste with a reference to Daniel Day-Lewis's Oscar-nominated performance as Abraham Lincoln in Steven Spielberg's eponymous film.

"The actor who really got into Lincoln's head was John Wilkes Booth," said the comedian, referring to the Civil War president's assassin.