Just a quick note as I sit at the WordPress Austin to share an Android app I found for editing text files. DroidEdit Pro (and the matching, ad-supported Free version) allow you to edit text files with full syntax highlighting and a tabbed pane interface (on my TF Prime, at least).
What you’re looking at is a screen capture from my Android Tablet, the Transformer Prime. I’ve got the matching keyboard dock, so this thing is damn near feeling like a ‘real’ computer.
In the right pane, you’ll see a list of files I’ve got open, in this case some WordPress templates direct from my SFTP server. Using SFTP is a pro feature, as well as editing direct to Dropbox, both of which are well worth a dollar.