One of the resources that comes into my mailbox is a publication called ITWire out of Australia. I enjoy getting a different perspective on people using technology, though every once in a while I get confused when they talk about technology issues up before their government.
Today was a fun piece called "A Win-Lin situation: moving a small office over to Linux." It's yet another example of someone making the move to Linux successfully. Their solution uses a Wine solution with Crossover Linux to allow some Windows programs to run in the new environment. If your business is absolutely bound to Windows applications then you really have no choice but to use such a solution. However, I would personally be very uncomfortable being held hostage by a piece of software like that... but that's an individual choice. The point is, that what on its face appeared to be an insurmountable obstacle to a Linux environment had an answer. It simply took someone with a strong Linux background to help work out the details.
If you are a Linux advocate, remember the amount of fear that some people have about technology. It really is a fear. It may not be a rational fear to you, but we all have some sort of thing that makes us irrationally uncomfortable. Maybe it's speaking in public. Maybe it's dealing with certain kinds of people. Maybe it's heights, or snakes or blood. If you have such a thing, try to realize that there are people who are just as nervous about technology. They don't need to be told how illogical or ignorant they are. They need to be reassured by someone who can confidently lead them to the answer. Get arrogant at this stage and the answer is simple: "No! because you're a jerk!"
I'm sure that the above paragraph really doesn't apply to any of my readers here. You are all helpful people who have your eye on the best technology for the job and creating an environment that is productive and easy-to-maintain. Keep your eye open for examples like the one above and learn what you can from them. Use them to help answer questions for people who just have no idea what Linux offers or why you would want to change.
A champion is supposed to help protect the weak. In your case, you are a knight in shining penguin armor who can lead the charge to a better way. Do with with honor and respect for those you protect. Lead them forward!