Not too long ago I was a massively fat bastard and following a low-carb diet for the best part of two years ended up dropping 90lbs. Then enter T-Nation and since the start of 2006 the rebuilding process has begun. Anyway...
I've got a ton of low-carb recipes but ended up keeping things as simple as possible for max effect.
Try mixing a little wholegrain mustard with cream cheese and once you've grown utterly sick of the taste of it, use your 'Must-Cheese' to spruce up your broccoli - or use it instead of a high carb sauce for steak, chicken or fish.
Speaking of broccoli, the one thing I missed more than anything else (well, except cake!) was mashed potato - being a brit I had managed to accumulate most of my gut by consuming vast quantities of bangers and mash. Broccoli mash (tm) made with a little butter, a little cream a clove of garlic and lots of black pepper well... It got me through the tough days. Esecially with turkey sausages sticking out of it! I used to make a big batch, sometimes adding cauliflower or other veg.
Ooh, one last one. If you're cooking a steak or chicken or something, after you've finished deglaze the cooking juices and add a little cream to the pan to create a rich, tasty and low carb sauce/gravy.
Hope these very quick and simple ideas help out.