Can you post a photo? Are you looking to cover the brick or paint or???
I would like to see a photo also!
There are so many things to consider when offering ideas. Please post a photo so we can make recommendations for your specific scenario.
Depending upon your homes decor, you can paint it, although I do not like that method, you can stone veneer over it. Tile over it. Lots of things. I would concur with Steve and Anita however, a photo will go a long way to get you some great ideas.
Are you asking for help on the entire wall or just the fireplace?
I would paint a brick fireplace, the difference can be remarkable. Also, the style mantle can have a tremendous impact.
Another request for a picture please.