Like the posters above said, I'd look into some reviews of the Denon AH-D2000 if I were you. You should also consider the Ultrasone HFI-780. Having owned both, I think both headphones would easily satisfy your requests. I preferred the forwardness of the Ultrasones, so I sold off my Denons. However, the Denons are 100x more comfortable on the head than the Ultrasones are...but I'm swapping out the headband and pads soon, so maybe my Ultrasones can be similar in comfort eventually. Again, I strongly suggest you look into reviews and comparisons of the D2000s and HFI-780s. It's been a long time since I've owned the D2000s, so I can't really do a side by side comparison for you. But I can tell you that both are great headphones that will surely satisfy your electronic music/movie watching fix.
edit: from my experience, the Ultrasones sounded better unamped to me. However, both headphones improve quite a bit from an amplifier. Lately the Ultrasones have been available for as low as $118 on amazon.com. I'd try to pick that up with an amp such as the fiio e10 or uDAC2. You could end up with a nice headphone+portable amp/dac setup that would fit your budget.
The HFI-780 is also much more portable. it can fold flat and comes with a 3 foot cord + extension cable. I don't recall exactly how long the Denon cord was, but it was significantly longer than 3 feet (probably approaching 6-10 ft). In addition, the Denons are bigger sized headphones which do not fold flat.
Edited by jaykay - 12/6/11 at 7:54pm