Better keep a pen handy, just in case you run into Johnny Depp. And if you run into Will Ferrell…just cap your pen and walk on? 

For the third straight year, Depp has been called the most gracious celeb around when it comes to providing fans with his John Hancock, according to Autograph Magazine's annual list of the 10 Best and Worst Hollywood Signers. 

And in what seems like a surprising revelation, Ferrell has been deemed the worst star with regard to giving autographs, with Autograph reporting in its December issue that the Blades of Glory star has been spotted taking a cue from his two-year-old YouTube costar and taunting people who approach him for signatures.  

Ferrell is joined in the doghouse by Tobey Maguire, Joaquin Phoenix, William Shatner, Renée Zellweger, John Malkovich, Julie Andrews, Bruce Willis, Teri Hatcher and Scarlett Johansson.  

But before you grab a felt-tip marker and ask Depp to sign your breasts and pose for pictures with your puppy, Autograph has included this disclaimer: 

"Keep in mind that even the best signers don't sign sometimes, the worst sometimes do, and that just because they're on the worst list doesn't mean they're bad people," the magazine notes. 

Depp, a People's Choice Award winner for Favorite Male Movie Star two years in a row, is none the worse for wear by being named number one, though. 

Autograph calls the Sweeney Todd star ”Charlie and the Chocolate Factory on film and 'Johnny and the Signing Factory' in person." 

"Though soft-spoken and laid-back, he likes to talk to fans and get to know them while signing," New York autograph dealer Anthony Risi told the mag, which says editors compiled their signature stats from judges based in Europe, New York and California who spent the past year observing how A-listers treat their fans. 

Depp's similarly approachable colleagues, according to Autograph, include Matt Damon, George Clooney, Jack Nicholson, Rosario Dawson, John Travolta, Katherine Heigl, Jay Leno, Dakota Fanning (nice to know she hasn't acquired a major 'tude yet!) and, in a complete about-face, Russell Crowe, who ranked among the worst signers last year. 

Apparently, he has since "started treating fans great, signing, taking pictures and chatting them up." 

So, if you think the timing's right, go ahead and say "g'day" to Russell.