..and I hate to say it chaps, but I also work from home.. :)
Needless to say my lunch hour was extended a tad today..
All I can say is, make sure your sub-woofer is turned on and up, it don't half make a difference.
And is it good? Well, it's subjective really, but I've played through the first 3 or 4 missions and I say yes, it's very good. The graphics are everything they've been told they'd be, I was surprised at how immersive the game is, it's not as 'arcadey' as COD, there's a couple of parts where my heart was really thumping and I was getting quite nervous (the bit on the aircraft carrier).
I see there are a fair few threads here slating it, ignore them, wait to play it yourself and reserve your own judgement.