The best laptop........in what price range? Do you need 1080P playback and a Bluray/ DVD reader?
Does 'entertainment laptop' also mean playing modern, recently released games at a high quality setting?
For all around video, movie and audio entertainment something like the SONY VPCEB17FX/L NoteBook should do well.
Core i3-330M(2.13GHz) CPU, 4GB RAM, 500GB HDD, 15" 1920x1080 HiDef LCD Screen, Mobility Radeon HD 5470 CPU and BluRay/DVD combo drive.