1. Harry Potter and the Half-Blood Prince made $22M in its opening night. [via Variety] 2. TechCrunch published some “sensitive internal documents” belonging to Twitter, including financial projections. [via Reuters] 3. Paul McCartney returned to the Ed Sullivan Theater 45 years after he and The Beatles first performed there. [via NYDN] 4. Is “Live Music”, a five-minute animated film made by animators from around the world and “edited” by Facebook users, Oscar material? [via NYT] 5. Looking for the next generation of YBAs at Damien Hirst’s alma mater, Goldsmiths. [via Guardian]