Recommended iPad apps for technical academics

I have an iPad now (hooray research funds) and I’ve been trying to figure out how to make it more useful for me research-wise. Here are some apps I’ve found, but I would love recommendations on others that are useful for academics who do math-y stuff.

OmniFocus is a task management app — it’s a little heavy-featured and expensive, but I’ve been using it to help myself reorganize (and sync) when on planes and the like.

iAnnotate PDF is a PDF annotation tool that syncs to Dropbox (among other things). I now drop the papers I have to review in to a folder there and then read and mark them up. Given that my review load has doubled recently, being able to make notes without printing is nice. I think it will get even better once I get a stylus.

In terms of media, IEEE Spectrum is available, as is Communications magazine (but not Signal Processing).

I use Prompt to SSH into machines on the few times that I need to do that from the iPad. It has saved my butt once or twice.

PDF Presenter is supposed to be nice for doing slides, but I haven’t used it yet.

There’s an old post on LaTeX for the iPad, but nothing really looked that appealing.

Anyone else have some recommendations?