Hey Mike, sorry for the late reply... anyway, as far as what I use.. an M-audio Keystudio, and all software synths, drums, keys etc.. You name it, i have it.
I have a nice Firewire Audio interface... a Focusrite Pro24 DSP, that I paid 400 bucks for but it went tits up on me shortly after my warranty ran out so I'm stuck using an internal Creative Audigy ASIO card for a while 
I mostly work thru headphones but have a solid pair of 270W Behringer Studio monitors.
At last check im nearing 2TB of sample driven instruments and samples, the samples are mooostly drums and percussion, Acoustic and Electronic.
Mostly what I use is Superior Drummer for drums, Omnisphere and Kontakt for most other instruments, except bass, where I am partial to using Trilian for.
Maybe the next time im stuck for a nice melody, you can help me out, I'll give you a shout!
Oh and for a DAW, I use Ableton Live 8.2.2... couldn't live without it!
Video editing, I have been using Sony Vegas 10