If you have an iPhone or an iPod Touch, I strongly recommend the new ESV App. I’m a huge fan of the ESV translation (I preach from it weekly, and I use it for personal study and devotional reading), and it’s nice to have an easily-searchable, offline-accessible version on my PDA. You can find it here.
If you haven’t joined the dark side (by purchasing an Apple product), then you can find a mobile version of the ESV here. In either case, the world has been transformed by the free availability of the Bible, and it’s nice that Crossway Publishers further that by making this excellent translation available at no charge.
Grace & Peace,