Super Bowl XLVII: 10 things to know

Ray Lewis reacts as he is introduced — AP Photo/Nick Wass

Ravens fans will rock the building during Ray Lewis' pregame Squirrel Dance, a YouTube sensation that Lewis surely will perform for the final time before retiring. Will smoke and flames accompany the star linebacker's ritual?

Photo: Lewis reacts as he is introduced before an NFL preseason football game against the Detroit Lions in Baltimore, Friday, Aug. 17, 2012.

2. LIVE OR LIP SYNC?

Don't walk away at halftime! Unless, of course, you want to miss Beyonce in concert. Beyonce says she did lip sync when she performed the national anthem on Inauguration Day -- but that she will "absolutely be singing live" during her Super Bowl halftime show on Sunday.

Photo: Beyonce performs the national anthem to conclude the 57th Presidential Inauguration ceremonial swearing-in of President Barack Obama at the U.S. Capitol on Jan. 21, 2013, in Washington.

3. ROGER'S RECEPTION

Forget the hated Falcons, the biggest football enemy to fans in the Big Easy is NFL Commissioner Roger Goodell. The Superdome will likely ring boos for the commish, who suspended the Saints' beloved coach Sean Payton (among others) for all of last season for his role in the team's bounty scandal. Goodell's popularity is low in NFL locker rooms too: 61 percent of players disapprove of Goodell, according to a new poll conducted by USA Today.

Photo: A picture of NFL commissioner Roger Goodell is seen on a dartboard inside the Parkview Tavern in New Orleans, Friday, Jan. 25, 2013.

4. TATTOO U

Two years ago, the Big Game was billed as the Super Bowl of Hair. But this year, everyone will be counting the tattoos - from the Ravens' Ray Lewis to 49ers QB Colin Kaepernick to, well, just about everyone on the field. Try to count how many players don't have tattoos.

Photo: Quarterbacks Colin Kaepernick (7) and Alex Smith (11) of the San Francisco 49ers talk in the locker room after the 49ers defeat the Atlanta Falcons 28-24 in the NFC Championship game at the Georgia Dome on January 20, 2013 in Atlanta, Georgia.

5. RAGIN' CAJUN SOIREE

Welcome back. This is the first Super Bowl in New Orleans since Hurricane Katrina ravaged the city in 2005. With Mardi Gras nearly upon us, too, it will make for as festive a celebration as any venue can muster.

Photo: Crowds congregate on Bourbon St. in French Quarter to celebrate the Mardi Gras Season in New Orleans, Friday, Feb. 17, 2012.

6. TAKE THAT!

Wes Welker, Bernard Pollard, Baltimore Ravens, New England Patriots — Jared Wickerham/Getty Images

The NFL might be all about offense and lighting up scoreboards, but this Super Bowl features some of the hardest-hitting defenders in the league. Both defenses are exceptionally physical, with Baltimore led by Ray Lewis, safety Bernard Pollard and end Paul Kruger, while San Francisco features linebackers Patrick Willis and NaVorro Bowman, lineman Justin Smith and safety Donte Whitner.

Photo: Jimmy Graham #80 of the New Orleans Saints is tackled by Patrick Willis #52 of the San Francisco 49ers at The Mercedes-Benz Superdome on November 25, 2012 in New Orleans, Louisiana.

7. SUPER PERFECTION

With a win, the 49ers would match the Pittsburgh Steelers with six Super Bowl crowns. The Steelers, though, have lost twice in the big game. The 49ers are a perfect 5-0 in championship games.

Photo: Former 49ers great Joe Montana and former Steelers star Franco Harris laugh at a press conference for former Super Bowl MVP's at the Ernest N. Morial Convention Center in New Orleans, Louisiana in Jan. 31, 2002.

8. BIG STARS/SMALL SCHOOLS

While national champion Alabama, LSU, Oregon and other college powers are represented on the Super Bowl rosters, look for the guys from Delaware, New Hampshire, Washburn, Lane, Central Missouri, Idaho. Harvard, too.

Photo: Joe Flacco of the Baltimore Ravens celebrates after throwing a touchdown pass in the fourth quarter against the New England Patriots during the 2013 AFC Championship game at Gillette Stadium on January 20, 2013 in Foxboro, Massachusetts. Flacco went to the University of Delaware.

9. HAND JIVE

After the game, keep your eyes on the traditional postgame handshake between the coaching Harbaugh brothers, John of the Ravens and younger brother Jim of the 49ers. Jim, by the way, is known for his extra hard handshake followed by a hard backslap (ask Lions coach Jim Schwartz). For that matter, keep an eye on their interaction before the game.

Photo: In this November 24, 2011 file photo, San Francisco 49ers head coach Jim Harbaugh (foreground), and his brother, Baltimore Ravens head coach John Harbaugh stand next to each other before the start of a game at M&T Bank Stadium on in Baltimore, Md.

10. DOME-ICILE

Viewing this Super Bowl will be cozy even at $850, $950, or $1,250 per ticket, compared to the 2014 Super Bowl. Enjoy the warmth in the Superdome: New Jersey hosts the game in a year, and it will be played at MetLife Stadium. Yep, outdoors.

Photo: A general view of the Carolina Panthers at the New Orleans Saints at the Mercedes-Benz Superdome on December 30, 2012 in New Orleans, Louisiana.