Just an idea, since the server I'm on is making the 'Aperture Science Redstone Aided Enrichment Center.' Is it possible to make a plugin for Bukkit that acts like the mod available for SSP on the minecraft.net forums? Video above showcases the SSP mod. Thanks~
Yes, it is possible, but your players wil need to have Spoutcraft in order to see the portal. If you want me to make it, i'll accept the challenge, but as I said, spout needed.