For most installations of OpenBSD for the typical user you can just hammer the enter key until installation is complete.
So next time you install OpenBSD, close your eyes, start hammering the enter button and pretend you are being greeted with nifty graphical effects each time.
You can even use your mouse to click about if you want (it wont do anything mind).
Simples
Edit: AIX does not have a graphical installer. Perhaps you should mention to IBM that they may get more money (even more money) if they introduce one.