Building a new media/gaming pc

Im starting to build a new media pc for the lounge, so we can surf the net, stream videos etc and ever so often some BF2, or Half life 2.

My thoughts so far-

CPU- Intel, C2D, e4300. I might possibly consider overclocking this wee beauty ( it just needs to be done!!). Any ideas on a cooler? Needs to be small but good!!

Mobo- Asus p5b Premium Vista edition. I dont know much about it but reviews are good, anyone had any experience or suggestions?

Memory- G.Skill 2gb, Pc2 6400, cas lat 5.

PSU- got an old Tagan TG480- 01 around here somewhere

Hard Drive- 320gb Seagate 7200.10 with Vista Ultimate 64 bit

Case- Silverstone Lascala lc20m with the VFD

GPU- on the fence, was gonna wait until ATI released something(anything!!) and wait till the dust settles.

Dvd rw- LG gsa-h42l, lightscribe.

Any thoughts, suggestions, recommendations welcome.