Beyonce and Blue Ivy (Ed Burke - AP/Beyonce.com)

Blue Ivy Carter, the much-heralded baby daughter of Beyonce and Jay-Z, has officially made her public debut.

The president and first lady of hip-hop have shared their first baby photos via Jay-Z’s Web site, Life + Times, an apparent follow-up to Beyonce’s public appearances earlier this week, her inaugural ones since giving birth.

The arrival of Blue — an infant dubbed a child of destiny and who inspired the recording of a rap song within hours of her birth — has prompted some over-the-top attention. But it doesn’t seem like an exaggeration to say that this little girl is one gorgeous baby.

Once the Grammy Award proceedings get underway Sunday, online chatter will certainly focus on which artist is collecting the most trophies (read: Adele, Adele and Adele), who is wearing the most flagrantly freaky outfit as well as — much to my chagrin — anything semi-offensive that may occur on live television.

But there are other appearances, performances and potential developments that have strong potential to turn into trending Twitter topics come Sunday. Here are five of them.

(Note: Don’t forget to check in with Click Track during the show for live blogging and frequent updates on Grammy night, as well as Celebritology, where we’ll cover fashions and other bizarre moments from an evening that will finally allow us all to put Bruno Mars, the Beach Boys and Skrillex in the same sentence.)

Jason Lee in 2005. (Chris Haston - Associated Press) Jason Lee will become a father for the third time, his rep tells People.

The “My Name is Earl” actor and his wife Ceren Alkac are expecting their second child. The couple, who wed in 2008, have a toddler daughter named Casper.

Lee, who starred in the “Alvin and the Chipmunks” trilogy, is somewhat infamous in the celebrity baby world for naming his first child Pilot Inspektor. (Pilot’s mother is Lee’s ex-fiance Beth Riesgraf.)

Casper is clearly a step down on the odd-name-o-meter, insomuch that it’s an actual name and not a profession. So what do you think baby Lee three will be named? Bob? Lumberjack? (Or Lumberjackina, if the baby’s a girl.) Weigh in on this highly important question in the comments.

Co-stars Steve Carell and Keira Knightley. (Jason Kempin/Getty; Stuart Wilson/Getty) Here’s the trailer for “Seeking a Friend for the End of the World,” an apocalyptic dramedy starring Steve Carell and Keira Knightley.

In the film, directed and written by “Nick and Norah” scribe Lorene Scarfaria, an asteroid named Matilda is headed for Earth and the mission to stop it has failed. This leads neighbors Carell and Knightley to go on a journey to find his first love, as well as to see her family, before the world ends in three weeks. It also stars Patton Oswalt, “Friday Night Lights’ ” Connie Britton, “Community’s” Gillian Jacobs, Rob Corddry, Rob Huebel and and a cute dog. (This summer’s Uggie?)

It may be the trailer’s use of the fantastic Talking Heads song “Road to Nowhere,” manipulating my emotions, but this looks pretty promising. Carell has proved that he can play a serious, likable, slightly depressed character well in “Little Miss Sunshine,” “Dan in Real Life” and “Crazy, Stupid, Love.” And Knightley is, well, Keira Knightley!

Watch a trailer for “Seeking a Friend,” due out in June 2012, below.

Madonna on the Super Bowl stage. (Christopher Polk - GETTY IMAGES)

Madonna called in to Ryan Seacrest’s radio show this morning and made her first comments about M.I.A.’s much-discussed raising of her middle finger during the Super Bowl halftime show.

In case there was any doubt, Mrs. Ciccone did not approve that message.

“To tell you the truth, I didn’t even know about it,” she told Seacrest. “I actually didn’t know about it until I left. . . . I found out about it in the elevator, actually on my way to go to the car to go to the airport. And I was really surprised.”