My mom recently asked me to redesign her business identity - she runs her own bookkeeping/tax business in Alaska - and so far this is what I've come up with:
(click both images for larger view)
Adobe Illustrator CS5
Adobe Illustrator/Photoshop CS5
I've always liked business cards with nothing but a full color photo printed on one side to showcase something pertinent to what the person does, or where they're located. This is a photo I took of a beach last summer about an hour from my parent's house in Alaska. The first design will reprint much easier, since it's all vector, but I do like the colors of the second one better. Perhaps if I made the first one in greens and blues instead...but I guess that is up to the client! (calling my mom "the client" sounds weird to me, hahahaa...)
This photo stream by user "dailypoetics" over at Flickr is great for getting ideas, it's a collection of random, amazing business cards.