Going by the MSY list, this is what i would use if i was building a computer similar to your needs and ive added budget allowances, also i havent chose a motherboard to match the system caus i CBF atm, nor did i choose a TV card caus i know nothing about them.
CPU - Intel 775chip, 8400 $299
RAM - 4gb 800 DDR2 kit Transcend $82 (Personelly id be going 4X1gb but they dont have it listed as a kit)
Hard drive - Western digital SATA 750gb $165 (or 1TB for $256 if the budget allows)
Graphics Card - Nvidia (generic which is the Nvidia cards) 512mb 9800gtx $365 (or the 1gb 9800GX2 $681)
Dvd writer - Pioneer 20X SATA DVD-RW $35 (SATA or IDE wont really matter as IDE will still support the burners top speed, but SATA is simpler, neater and better for air flow) (or if you want blu-ray, again go the Pioneer that best suits your needs)
Power supply - They seem over priced, so for that id go one of their cheaper ones either 720 or 860w, or alternitavely shop around for a 750w+ silent power supply.
Case - Just choose one that has enough space for everything you want to put in, aswell as a good air flow, a front low fan is always good on a case matched with a back one, otherwise a decent side fan with back ones.
CPU Fan - I would be upgrading to a Thermaltake CPU fan as the standard ones dont seem to cool very well under harsh conditions or in summer weather.
I have chosen this on what i would do given this list, i chose some brands over others from personel expeirience. Good luck with the build and let us know what you choose. Also im very anal (not gay sex) about cooling, because when i built my first computer ever from scratch i totaly ignored it, and it over heated constantly, i bought the best of everything, yet it could perform because it was getting way to hot, now i have the cooling sorted it is a beautiful machine.