I'm just wondering what everyone else does when a "parent" company has various groups that donate (board of directors, employees, "Friends of John Doe", etc.) Right now they are all listed as a separate constituent but this is starting to get cumbersome when there are many different groups for one company. Any input?

If the checks are all the same (same account - same company - same address) I handle these situations as salutation fields for publishing to our donor books or for tributes. I use the Primary contact on the Org as the one who receives the receipt as opposed to changing who gets the receipt each time since most businesses want one area to receive all financial documentation.

Some people that do recognition on a per gift basis would have a gift attribute that would store the publish field.

If they are actually separate, I would keep them separate.