- Approval of God: He was shown the "Daniel Radcliffe's Delicious Arsehole" card from Cards Against Humanity, and after a moment of mild bemusement admitted he found it quite funny before gleefully signing it. Proof◊.
- Contractual Purity: Moral Guardians were in an uproar about Dan starring in Equus because he's naked on stage, and there was similar press about the famous Harry and Hermione nude kiss in the final film - even though neither of them were actually nude when they shot it. But averted when he came out after having problems with alcoholism, as he announced he would be staying away from it.
- Creator Backlash: He views Harry Potter and the Half-Blood Prince as his weakest performance across the franchise.
- Dyeing for Your Art: Shaved his head onscreen to play an FBI Agent infiltrating neo-Nazis for Imperium.
- Fake Nationality: In his 2012 Saturday Night Live appearance, all of his "American" characters sounded exactly like J. Pierpont Finch. He auditioned for a part in What If doing a Canadian accent but he was told he wasn't marketable without his British accent. He has however been a Fake American in Horns and Imperium.
- He Really Can Act: Or rather "sing", not to say that his acting is bad. Just search for How to Succeed in Business Without Really Trying on YouTube, or just simply type "daniel radcliffe singing" on the search bar.
- I Am Not Spock: He's still young, so he may escape this one day, but for now he's known first and foremost as Harry Potter. This also applies to nearly all the other actors to play Hogwarts students in the series and even some of the already famous adult actors playing teachers and so forth. That's not to say that he and his cast mates aren't proud of having starred in it, because they are.
- Method Acting: Lampshaded this once. When asked how he prepared for the lead role in Equus, he mentioned how the questioner obviously expected him to say "I sat in a stable for a few days and talked to myself", instead of "I watched Spongebob for an hour and then went to work."
- One of Us:
- He loves Tom Lehrer, and singing "The Elements" is one of his favorite party tricks. If that doesn't make him a nerd, who knows what can. Don't believe it? Look here.
- He's also a fan of American Football, even to the point of playing in a fantasy football league.
- Apparently he likes anime, too. According to this he likes among other things Initial D, Lupin III and Monster.
- As he and author J. K. Rowling discovered to their mutual delight, Michael Powell and Emeric Pressburger's A Matter of Life and Death is their favourite film of all time.
- Playing Against Type: As an evil hammy billionaire in Now You See Me 2.
- Promoted Fanboy:
- Being a huge fan of The Simpsons growing up, he was delighted about his guest appearance on the show and described it as "the culmination of his life". Fun fact: with Emma Watson having voiced Princess Pea for The Tale of Despereaux and Rupert Grint voicing Josh in Postman Pat: The Movie, all members of the trio have voiced an animated character.
- Radcliffe had idolized James McAvoy when he was a teen, so he considers it a great privilege to act alongside the man who inspired his acting career in Victor Frankenstein. Daniel mentions in the Nov. 2015 issue of Empire that he was star-struck when they first met on set.
Radcliffe: I was nine when I met Maggie Smith. I didn't know who Maggie Smith was, so there was no fear of being awestruck or anything. But when I met James... I had grown up watching Inside Im Dancing, Atonement, The Last King of Scotland... He was somebody I always really looked up to, so I think easily the first week or two it was just a lot of me being like, "Oh my god, he's so good."