Ports that install binaries

[Ryan Schmidt]

Are there any ports that install binaries? I mean, any ports that  
don't compile things themselves, but which download binaries and just  
install them?

I'm thinking about isightcapture, which is an interesting project:

http://www.intergalactic.de/hacks.html

But source is not distributed, so the only option for including it in  
MacPorts would be to download the disk image, mount it and copy the  
binary in to the right place. Would this be acceptable? Or is it  
deemed that in this case the project should not appear in MacPorts?

If it is acceptable, is there an example of a port that mounts a disk  
image and copies files from it?