What's so funny, Jerry?

Comedian Jerry Seinfeld took his rare 1970 Dodge Challenger out for a spin in Santa Monica on Tuesday, and something was making the funnyman giggle because he had a HUGE smile plastered on his face!

Or maybe he is grinning because his ride is one of only 2,399 manufactured. We wonder who has a more extensive car collection - Jerry or Jay Leno?

Almost as rare as the vehicle? Seeing the Seinfeld star out and about!

Comedian Jerry Seinfeld's Colorado home is for sale by Sotheby's ... and it's a far cry from a cramped New York City apartment.

Seinfeld, 57, has put the Telluride retreat on the market for $18.25 million.

The home has 11 bedrooms and bathrooms within its 14,200 square feet, and has a 5,500 square foot deck to enjoy the river and mountain views of the property. It sits on 26 acres.

Well, bathrooms shmathrooms, we say. All we want to know is -- does Kramer live next door?

Check out all of Sotheby's pics of Seinfeld's stunning home in our gallery below!

All sorts of celebs are weighing in on The Donald as of late ... and they have some not-so-nice things to say about The Apprentice host and potential presidential candidate.

Comedian Bill Cosby spoke to NBC about Trump's possible 2012 campaign.

"He’s full of it,” Cosby said. “You run, or shut up … but the only thing he's running is his mouth."

And Robert De Niro said Trump is like a "used car salesman" when it comes to the businessman's questioning of President Obama’s birth certificate.

Last, Jerry Seinfeld pulled out of an event benefiting St. Jude Children’s Research Hospital because Trump’s son, Eric, was hosting it.

But Trump, who's used to being the one giving the criticism a la his Apprentice franchise, doesn't take such critiques lightly.

See what fightin' words he had in response to these three -- and the bizarre statement that one celebrity gave in support of Donald -- after the jump!

Jerry Seinfeld is super serious Porsche collector and it doesn't hurt that he's super rich and can fund his addiction!

The comedian owns just fewer than 50 Porsches -- the most expensive being a $700,000 Porsche 959 -- one of only 300 or so every produced. He also has a 1955 Spyder 550s -- the same kind James Dean was driving when he crashed and died.

Find out how Jerry passed on his love of Porsches to his wife Jessica, after the jump ...

The funnyman is back! And he was very good on SNL last night, but The Marriage Ref is so awk and awful, it doesn't really matter!

I know, breaking news, right?

Looking sweet as honey (or, in Renee Zellweger's case, a bit more like she's bitten into something sour), stars dressed in bee black and yellow turned out for the premiere of the new DreamWorks animated movie in Westwood Sunday night. With all the buzz about Seinfeld's first animation appearance, will this movie live up to it's expectations, or will it bee just so-so?

With America's most Dirty Famous celebrity now behind bars, it seemed like everyone in Cannes had an opinion about the incarcerated heiress. From Jason Statham exclaiming "fantastic" to Dita Von Teese saying "bless her," and Harvey Weinstein snickering when we suggested a Jailbird Paris movie, Paris was definitely on the top of everyone's (French) tongue!