Zac vs. Matthew Who'd You Rather?

"High School Musical" stud Zac Efron and "Glee" coach Matthew Morrison both sang each other's praises at the same event in L.A. on Tuesday.

Question is ...

Lead Singer of Cinderella 'Memba Him?

Tom Keifer became famous as the lead singer of ridiculous '80s hair band Cinderella. Guess what he looks like now!

Paris Hilton -- The Breast She's Ever Looked

Dressed in her best Marilyn Monroe drag, natural beauty Paris Hilton showed off her biggest assets at her latest perfume launch at MyStudio nightclub in L.A. last night.

The fragrance is called good bra Tease.

Bar Refaeli -- The Smoldering Bikini Yacht Party

Bar Refaeli stripped down to her ridiculous pink bikini this weekend -- to romp around the deck of a super-expensive yacht off the coast of Costa Smeralda ... but she wasn't the only supermodel on board.

Fresh from testifying at a war crimes trial -- alleged blood diamond recipient Naomi Campbell and her boyfriend Russian businessman Vladislav Doronin were also on the yacht ... along with Bar's main squeeze Leonardo DiCaprio.

Fun fact: Leo starred in the 2006 film "Blood Diamonds."

Alice vs. Sly Who'd You Rather?

Jurassic rock icon Alice Cooper, 62, and "Expendables" star Sylvester Stallone, 64, giggled together at the same event in London on Monday.

Question is ...

JetBlue Flight Attendant -- Gunther on 'Friends'?

Here's America's favorite JetBlue flight attendant Steven Slater (left) -- and James Michael Tyler who played Central Perk manager Gunther on "Friends" (right).

Neither serves coffee ... anymore.

We're just sayin'.

Treach from Naughty By Nature 'Memba Him?

With '90s hits like "O.P.P.", "Everything's Gonna Be Alright," and "Hip Hop Hooray," Treach (seen here with Tupac Shakur) became famous as the lead singer of the hip hop group Naughty By Nature. Guess what he looks like now!

Audrina Patridge -- Bikini Bikini in Bora Bora

Sporting matching hairless chests, former "Hills" star Audrina Patridge and her sometimes boyfriend Justin Bobby Corey Bohan turned up the heat while on vacation in Bora Bora this weekend.

Smooth.

Lisa vs. Brooke Who'd You Rather?

Ravishing beauty Lisa Rinna, 47, and new "Dancing with the Stars" co-host Brooke Burke, 38, got gussied up for the same event in Beverly Hills this weekend.

Question is ...

The Chick in 'Hot Shots!' Movies 'Memba Her?

In the '90s, Valeria Golino became somewhat famous playing the hot chick opposite a buff Charlie Sheen in "Hot Shots!" and "Hot Shots! Part Deux." Guess what she looks like now!

Simon Cowell -- Just a Little Off the Sides

Former "American Idol" judge Simon Cowell is really smooth ... on the sides of his stomach.

The buxom 50-year-old showed off his interestingly manscaped torso in the south of France this weekend.

Very trim.

Cristiano Ronaldo Is Good Looking

Seriously.

Britney Spears -- Comical Date Night

A demure looking Britney Spears enjoyed a classy night on the town last night with boyfriend Jason Trawick, taking in a play in downtown Los Angeles.

Brit and Jason saw the comedy "The Lieutenant Of Inishmore" which stars Chris Pine and centers around a dead black cat. Hilarity ensues.

'Real Housewives of DC' Who'd You Rather?

The latest batch of Bravo's wannabe celebrities Lynda Erkiletian (bottom left), Catherine Ommanney (top right), Stacie Scott Turner (bottom right) and Mary Schmidt Amons (top left) aka "The Real Housewives of Washington D.C." started their 15 minutes of fame last night.

Question is ...

Ian Ziering: Good Genes or Good Docs?

Is Ian Ziering still in high school?

Here's the 28-year-old back in 1992 when he played a high school student on "Beverly Hills, 90210"(left) -- and 18 years later, the 46-year-old at an event in Hollywood on Thursday (right).

He definitely graduated with honors.

Carla vs. Rosario Who'd You Rather?

"Sin City" stars Carla Gugino, 38, and Rosario Dawson, 31, reunited their faces at the same event in Hollywood on Thursday.

Question is ...