CrunchBang Linux has released a version for the Asus Eee, called the CrunchEee. According to Liliputing:
The OS comes preloaded with Firefox, VLC, and not much else. If you want OpenOffice.org, or even lighter weight office apps like Abiword and Gnumeric, you’ll have to install them yourself. But this means that CrunchEee is very light on your hard drive, SSD, RAM, and other system resources.
Check out CrunchEee here.