Business card ideas?

If they're simular or complimenting services - I say list them
You could set up the card as Sandi suggested, or place contact info in one corner (like lower left) and list the different services prominently in the center.

BUT if the services (or profit centers) are vastly different or of a competing nature and they're listed on the same card - it'll just look like you either can't make up your mind as to what you're doing, or like none of the services is good enough to make it on it's own merits (whether this is true or not, can turn potential customers/clients off from utilizing you for those services).