what speakers would do justice to action films, as well as to pure classical music which requires the sophistication of al the dynamics and pitches of all frequencies to be heard?
It's all a matter of personal taste so everyone prefers different things. Generally speaking, people who want mainly HT tend to lean towards brighter speakers like Boston Acoustics, Axiom, Klipsch, etc... But not everyone feels that way. I'll throw a few possibilities out there that should keep your speaker budget around $1,250.
Monitor Audio Bronze sereies from saturdayaudio.com
Boston Acoustics VR and CR series from Circuit City and onecall.com
Mirage OMNI from crutchfield.com
PSB from dmc-electronics.com
X-ls series from av123.com
Orbs from orbaudio.com
SVS from svsound.com
Mordaunt-Short from tsto.com and accessories4less.com
KEF from accessories4less.com
Axiom from axiomaudio.com
Ascends from ascendacoustics.com
Klipsch from Best Buy
Definitive Technology from Best Buy
That's just a fraction of possibilities and they're all good, but you can start to see why auditioning is so important.
For equipment, any decent Denon, Yamaha, H/K, and Onkyo receiver should do fine. If you want to step things up a bit, pick up some entry-level separates from Emotiva or Outlaw Audio. For a DVD player, check out Oppo. Universal remote, Logitech Harmony or a UR MX Theatre Master. Monoprice is great for inexpensive, good-quality cables.
Speakers and Subwoofer = $875
HSU STF-2 Sub = $350
Emotiva UL Combo = $800
Oppo DVD Player = $230
Monoprice Cables = $100
Universal Remove = $100
Total = ~$2,455 + shipping costs
Something like this should do just fine or you could lean even more on the speakers and pick up a less expensive receiver. But figure out speakers first as they're really the key to a good system.