OS X Shell Hosts?

Are there any places out there that sell shell accounts that run on OS X?

I would not mind a place to do OS X stuff when I can't get to my Mac, or just a place to run an IRC client from. It might also be useful for building non-GUI application development on.

I know of MacMiniColo, but I don't want a whole server. Maybe a couple people would be willing to split one. Or, this could be an excuse to co-lo an older Xserve somewhere and sell shell accounts for $3-4 a month.