Set up fake dressing room and hidden cameras. Crouch down and hide in the corner. Scream and scare the living crap out of guest. Talk about a winning formula!

Ellen DeGeneres got into the Halloween spirit this week, and while her tactics were neither super original nor elaborate, the results are still hysterically funny.

Here’s Ellen scaring Taylor Swift in the manner described above …

LOL. We don’t know what it is, but there’s something about watching Taylor Swift react like she did which just makes us love America’s Sweetheart even more.

Follow the jump for Ellen punking more celebrities in similar fashion. What’s not to love about Mario Lopez, David Spade and Lauren Graham getting spooked?

Oh, and after the producers decided to turn the tables on Ellen, Jimmy Kimmel gets an award for chivalry for racing to her aid (and being quick on his feet) …

Jon Gosselin is back on the market, having broken up with Hailey Glassman, his girlfriend of several months, Extra is reporting this morning.

“They’re taking a break,” an insider said, adding that it “may not be permanent.”

The reason? Jon met with famed Rabbi Shmuley Boteach (who also advised Michael Jackson) for regular study sessions and counseling.

Afterward, he “apparently decided he needed to spend some time on his own.”

So Jon and Hailey Glassman decided to spllit. But tension had been building.

Slightly damaged, mediocre girls of America, come and get your dream man!

Jon Gosselin and Hailey Glassman first got close in May when Jon stayed with her father, plastic surgeon Lawrence Glassman (who performed a tummy tuck for Jon’s estranged wife, Kate, after she gave birth to their sextuplets), in New York.

The two claim they didn’t become romantically involved until Jon and Kate Gosselin filed for divorce in June, but they’ve been a (fairly) stable item since.

Until earlier this week, that is. Glassman told The Insider she felt “emotionally abused” by Gosselin, a natural liar who is prone to “mantrums.”

“I don’t know why I love him,” she said.

A source close to Hailey reports, “They broke up the day she did that interview. She told me it was gonna be over. She was just waiting to let him go.”

Yesterday, Gosselin was apparently resigned to this fate, admitting in a statement that he got “carried away by the challenges of fame” and yearns to “reconnect with my deeper, more spiritual, more altruistic self.”

We’re not exactly holding our breath.

Hailey Glassman is back on the market, too. Don’t everybody call at once, guys.

It’s a boy for Colin Farrell! Again!

The actor and his girlfriend, actress Alicja Bachleda, welcomed their son Henry Tadeusz Farrell back on October 7. This is the couple’s first child together.

Farrell confirmed he got Alicja Bachleda pregnant at the Toronto Film Festival in September. He has a 6-year-old son, James, with model Kim Bordenave.

The Irish star, 33, and the Polish actress, 26, began dating earlier this year after meeting while filming Ondine. That’s gonna be a good-looking baby!

Alicja Bachleda and Colin Farrell are parents for the first time (together)!

Confirming the pregnancy in September, Farrell said he was looking forward to “everything” about parenthood. “I take it as it comes. Even changing diapers.”

Congratulations to the new parents!

Quite a week, wasn’t it? We can’t remember a crazier seven days of celebrity gossip and news since … well, the week before this. But this one was still pretty solid.

Welcome to The Hollywood Gossip’s Week in Review!

Some of the highlights (and lowlights) from the past week:

• Most subtle F-bomb dropped: This Arnold Schwarzenegger letter.
• Least subtle online plea for forgiveness: Chris Brown’s RiRi Twittering.
• Most desperate fake mistress looking for 15 minutes:: Nicole Forrester.
• Least sane, potentially murderous stalker: Sean Christian Mathis.
• Only slightly less deranged (although funnier): This Miley fan.
• Oh, and this random Taylor Swift fanatic wasn’t much better.
• Most absurd feud that absolutely refuses to die: Sarah Palin vs. Levi Johnston. He says she called her mentally challenged baby a retard. She replied suggesting Levi’s a man-whore. He says he has info that can take her down. Etc.

Sarah Palin and Levi Johnston need to get in a cage fight already.

• Most excuse for a news story: Robsten breaking up. Were they even confirmed as a couple? Only by the same magazine that reported their split a week later.
• Least appropriate, borderline racist comment: Bob Griese’s Taco Hell.
• Most exciting new couple like ever: Taylor Swift and Taylor Lautner.
• Least healthy couple ever: Blake Fielder-Civil and Amy Winehouse.
• Most decadent wedding ceremony: Jared Kushner and Ivanka Trump.
• Least necessary child-pimping of the week: Billy Ray, on Noah Cyrus.
• Most overhyped release: Britney Spears’ “3″ music video. Sure, the publicity for Michael Jackson’s This Is It was overkill, but at least the movie was good. And wasn’t leaked five seconds at a time with a perfume ad.

Michael Jackson’s This Is It debuted this week to general praise.

Don’t forget to follow THG on Twitter for all of the latest Hollywood news, celebrity gossip, rumors, commentary and humor as it happens, 24/7/365.

Lindsay Lohan used to be so cute. So fresh-faced, so innocent.

Now she’s a slow-moving train wreck that’s picking up speed.

The only question is when and where that train is going to crash, and if the result will be catastrophic. Can the coked-up engineer of this locomotive be saved?

Yeah. We know.

In just a few short years, she’s gone from an adorable ‘tween movie star to a shell of a woman whose Wikipedia page features a long, four-paragraph section called “Car Accidents, DUIs and Rehabilitation.” That’s never a good sign.

She’s withering away, both literally and otherwise. That fresh, innocent face is long gone, a pair of comically enhanced lips all that remains in its wake.

Check out these Lindsay Lohan pictures from 1998-present and see how far she’s come … and not in a good way. We hope this photo montage inspires the people around her to step in and help before it’s too late and she slips away: